From 451517996 at qq.com  Sun May  1 09:39:35 2016
From: 451517996 at qq.com (=?gb18030?B?zuLD+g==?=)
Date: Sun, 1 May 2016 21:39:35 +0800
Subject: [Flask] Flask Digest, Vol 10, Issue 45
In-Reply-To: <mailman.73.1461859203.2595.flask@python.org>
References: <mailman.73.1461859203.2595.flask@python.org>
Message-ID: <tencent_37D79C7D6F3C931E08EE0B19@qq.com>

btw github:https://github.com/qianqians/abelkhan.git





------------------ Original ------------------
From: "flask-request"<flask-request at python.org>; 
Date: 2016?4?29?(???) ??0:00
To: "flask"<flask at python.org>; 
Subject: Flask Digest, Vol 10, Issue 45



Send Flask mailing list submissions to
	flask at python.org

To subscribe or unsubscribe via the World Wide Web, visit
	https://mail.python.org/mailman/listinfo/flask
or, via email, send a message with subject or body 'help' to
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Today's Topics:

   1. Need advice in implementing news feed in flask (aiman parvaiz)


----------------------------------------------------------------------

Message: 1
Date: Thu, 28 Apr 2016 11:45:54 +0530
From: aiman parvaiz <aimanparvaiz at gmail.com>
To: flask at python.org
Subject: [Flask] Need advice in implementing news feed in flask
Message-ID:
	<CANR1tAwrieGX3gfmA+rNWJyN7xY52oJC2i7tGQD=SzNgVC2t9Q at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi all,
I am new to Python and am working on writing backend (REST API using Flask)
for a Android app (Simple content posting app). I need advice in
implementing a notification feed where a user can see all the activities
related to their posts, for example: if some one commented on user's post
it should show up on this feed. Also, there are some activities in this
feed for which we need to show notification even if the user is not using
the app (similar to push notification).
I am new to Python and understand that a part of this can be achieved by
Push notifications(GCM) but what should be the logic for showing events in
feed which are not a part of push notification.

I hope I was able to explain myself.

Thanks
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_______________________________________________
Flask mailing list
Flask at python.org
https://mail.python.org/mailman/listinfo/flask


------------------------------

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From 451517996 at qq.com  Sun May  1 09:39:04 2016
From: 451517996 at qq.com (=?gb18030?B?zuLD+g==?=)
Date: Sun, 1 May 2016 21:39:04 +0800
Subject: [Flask] Flask Digest, Vol 10, Issue 45
In-Reply-To: <mailman.73.1461859203.2595.flask@python.org>
References: <mailman.73.1461859203.2595.flask@python.org>
Message-ID: <tencent_185B19A21173006B3C7EA50B@qq.com>

http://abelkhan.com/user/?uid=5710fbe6438fcb0e7c178cbe 
build a open source twitter by flask


now it is a demo


reception every one join my repository

 



------------------ Original ------------------
From: "flask-request"<flask-request at python.org>; 
Date: 2016?4?29?(???) ??0:00
To: "flask"<flask at python.org>; 
Subject: Flask Digest, Vol 10, Issue 45



Send Flask mailing list submissions to
	flask at python.org

To subscribe or unsubscribe via the World Wide Web, visit
	https://mail.python.org/mailman/listinfo/flask
or, via email, send a message with subject or body 'help' to
	flask-request at python.org

You can reach the person managing the list at
	flask-owner at python.org

When replying, please edit your Subject line so it is more specific
than "Re: Contents of Flask digest..."


Today's Topics:

   1. Need advice in implementing news feed in flask (aiman parvaiz)


----------------------------------------------------------------------

Message: 1
Date: Thu, 28 Apr 2016 11:45:54 +0530
From: aiman parvaiz <aimanparvaiz at gmail.com>
To: flask at python.org
Subject: [Flask] Need advice in implementing news feed in flask
Message-ID:
	<CANR1tAwrieGX3gfmA+rNWJyN7xY52oJC2i7tGQD=SzNgVC2t9Q at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi all,
I am new to Python and am working on writing backend (REST API using Flask)
for a Android app (Simple content posting app). I need advice in
implementing a notification feed where a user can see all the activities
related to their posts, for example: if some one commented on user's post
it should show up on this feed. Also, there are some activities in this
feed for which we need to show notification even if the user is not using
the app (similar to push notification).
I am new to Python and understand that a part of this can be achieved by
Push notifications(GCM) but what should be the logic for showing events in
feed which are not a part of push notification.

I hope I was able to explain myself.

Thanks
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------------------------------

Subject: Digest Footer

_______________________________________________
Flask mailing list
Flask at python.org
https://mail.python.org/mailman/listinfo/flask


------------------------------

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From colin at techdata.net.au  Mon May  2 00:24:39 2016
From: colin at techdata.net.au (Colin Haig)
Date: Mon, 02 May 2016 12:24:39 +0800
Subject: [Flask] Sessions
Message-ID: <E032109C-6B26-4703-A305-E8B900AED7AB@techdata.net.au>

Hi

I have a flask app running on apache(windows 7) - mod_wsgi  - when I go to the app from one machine and set a variable and then go to the app from another computer and reset the variable it effects the first machines variable.

It seems that the app/apache are not running in separate threads/processes.

I have set processes 

 app.run(processes=10)

Any help greatly appreciated.

Regards

Colin  

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From and.damore at gmail.com  Mon May  2 02:48:10 2016
From: and.damore at gmail.com (Andrea D'Amore)
Date: Mon, 2 May 2016 08:48:10 +0200
Subject: [Flask] Sessions
In-Reply-To: <E032109C-6B26-4703-A305-E8B900AED7AB@techdata.net.au>
References: <E032109C-6B26-4703-A305-E8B900AED7AB@techdata.net.au>
Message-ID: <CAMonFrRh235ujtksEdJUgXQRk8rD2XcH038HC0xzhbE+TMDZcQ@mail.gmail.com>

On 2 May 2016 at 06:24, Colin Haig <colin at techdata.net.au> wrote:
> when I go to the app from one machine and set a variable and then go to the
> app from another computer and reset the variable

Can you provide an reproducible example or a more detailed description
of the steps involved in "going to another machine and resetting a
variable"?


-- 
Andrea

From ahall at autodist.com  Tue May  3 16:05:54 2016
From: ahall at autodist.com (Alex Hall)
Date: Tue, 3 May 2016 16:05:54 -0400
Subject: [Flask] Deploying Flask on Debian
Message-ID: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>

Hello list,
My work has a Google Cloud account, so my boss just made me a Debian
server. Being virtual, I can't physically access it, but I've got SSH and
SCP, so  same thing. No remote GUI, though, just command line.

I've been looking up how to deploy Flask on Linux, Debian specifically, for
a couple hours. I'm getting a *lot* of hits, but nothing that seems to be
in line with anything else. Some tell me to use WSGI (which I expected),
but others say mod_wsgi, and others UWSGI. Mod_wsgi might mean, some say,
compiling it for Python3, but I'm on Python 2.7.9? Most assume I'm using a
virtual environment, which I'm not, because Python and other web projects
are the only things on this server. The Flask docs talk about UWSGI, then
something called MGinx? I'm using Apache2, again on Debian 8.

Is there a single tutorial or article that most people recommend? I'm not
very experienced with Debian, but I'm fine with a command line interface in
general. I've got Flask, Flask-WTF, and the pyodbc module I'll need, and
now just want to get Flask running with Apache2 so Apache can serve my
Flask app. Thanks.

-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Tue May  3 16:19:03 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Tue, 3 May 2016 15:19:03 -0500
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
Message-ID: <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>

Personally, I really like the Digital Ocean guides.

You can check out the Ubuntu guide, as it shouldn't be all that different
from Debian (I used it as a template for internal deploy docs I wrote at my
last position).

https://www.digitalocean.com/community/tutorials/how-to-serve-flask-applications-with-uwsgi-and-nginx-on-ubuntu-14-04

I personally prefer uwsgi behind Nginx


Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Tue, May 3, 2016 at 3:05 PM, Alex Hall <ahall at autodist.com> wrote:

> Hello list,
> My work has a Google Cloud account, so my boss just made me a Debian
> server. Being virtual, I can't physically access it, but I've got SSH and
> SCP, so  same thing. No remote GUI, though, just command line.
>
> I've been looking up how to deploy Flask on Linux, Debian specifically,
> for a couple hours. I'm getting a *lot* of hits, but nothing that seems to
> be in line with anything else. Some tell me to use WSGI (which I expected),
> but others say mod_wsgi, and others UWSGI. Mod_wsgi might mean, some say,
> compiling it for Python3, but I'm on Python 2.7.9? Most assume I'm using a
> virtual environment, which I'm not, because Python and other web projects
> are the only things on this server. The Flask docs talk about UWSGI, then
> something called MGinx? I'm using Apache2, again on Debian 8.
>
> Is there a single tutorial or article that most people recommend? I'm not
> very experienced with Debian, but I'm fine with a command line interface in
> general. I've got Flask, Flask-WTF, and the pyodbc module I'll need, and
> now just want to get Flask running with Apache2 so Apache can serve my
> Flask app. Thanks.
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ahall at autodist.com  Tue May  3 18:02:00 2016
From: ahall at autodist.com (Alex Hall)
Date: Tue, 3 May 2016 18:02:00 -0400
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
Message-ID: <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>

Thanks guys. I'm intrigued by Nginx, after reading more about it. The
problem is that apt-get install nginx keeps failing, with some kind of
dependency problem, sudo or no sudo. I've stopped Apache, but still get the
error. Thus, I'd like to stick to Apache if I could, simply because it's
already installed and (to my knowledge) working. This is a small, internal
site that doesn't need the efficiency of Nginx to run, and I'm having
enough problems with getting Flask to work that messing with installing a
stubborn Nginx doesn't seem the best way to stay sane. :) I'd love to play
with Nginx, as it seems easier to configure than Apache, but unless I can
get it to install cleanly that's not really an option.

On Tue, May 3, 2016 at 4:19 PM, Anthony Ford <ford.anthonyj at gmail.com>
wrote:

> Personally, I really like the Digital Ocean guides.
>
> You can check out the Ubuntu guide, as it shouldn't be all that different
> from Debian (I used it as a template for internal deploy docs I wrote at my
> last position).
>
>
> https://www.digitalocean.com/community/tutorials/how-to-serve-flask-applications-with-uwsgi-and-nginx-on-ubuntu-14-04
>
> I personally prefer uwsgi behind Nginx
>
>
> Anthony Ford,
> KF5IBN,
> ford.anthonyj at gmail.com
>
> On Tue, May 3, 2016 at 3:05 PM, Alex Hall <ahall at autodist.com> wrote:
>
>> Hello list,
>> My work has a Google Cloud account, so my boss just made me a Debian
>> server. Being virtual, I can't physically access it, but I've got SSH and
>> SCP, so  same thing. No remote GUI, though, just command line.
>>
>> I've been looking up how to deploy Flask on Linux, Debian specifically,
>> for a couple hours. I'm getting a *lot* of hits, but nothing that seems to
>> be in line with anything else. Some tell me to use WSGI (which I expected),
>> but others say mod_wsgi, and others UWSGI. Mod_wsgi might mean, some say,
>> compiling it for Python3, but I'm on Python 2.7.9? Most assume I'm using a
>> virtual environment, which I'm not, because Python and other web projects
>> are the only things on this server. The Flask docs talk about UWSGI, then
>> something called MGinx? I'm using Apache2, again on Debian 8.
>>
>> Is there a single tutorial or article that most people recommend? I'm not
>> very experienced with Debian, but I'm fine with a command line interface in
>> general. I've got Flask, Flask-WTF, and the pyodbc module I'll need, and
>> now just want to get Flask running with Apache2 so Apache can serve my
>> Flask app. Thanks.
>>
>> --
>> Alex Hall
>> Automatic Distributors, IT department
>> ahall at autodist.com
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>


-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From and.damore at gmail.com  Wed May  4 03:44:55 2016
From: and.damore at gmail.com (Andrea D'Amore)
Date: Wed, 4 May 2016 09:44:55 +0200
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
 <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
Message-ID: <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>

On 4 May 2016 at 00:02, Alex Hall <ahall at autodist.com> wrote:
> Thanks guys. I'm intrigued by Nginx, after reading more about it. The
> problem is that apt-get install nginx keeps failing, with some kind of
> dependency problem, sudo or no sudo.

That's odd for a freshly installed Jessie, it could be a clash with
the installed apache service but since you didn't paste the actual APT
error there's no way to tell.

> I've stopped Apache, but still get the
> error. Thus, I'd like to stick to Apache if I could, simply because it's
> already installed and (to my knowledge) working.

I stay away from apache httpd as much as I can, for a similar need I
use lighttpd as proxy to the flask application on localhost.

> This is a small, internal
> site that doesn't need the efficiency of Nginx to run, and I'm having enough
> problems with getting Flask to work that messing with installing a stubborn
> Nginx doesn't seem the best way to stay sane.

uwsgi is capable of directly serving the app, if it's a LAN app you're
probably fine deploying the app with it, for a very low number of
clients you could even use the builtin server.
Just the other day I was reading again about flask deployment and I
think I saw numbers as rule of thumb, 10 clients for builtin server
and 100 for uwsgi IIRC but I may as well just making those up.

If you decide to go with uwsgi, that I'd suggest in this case, just
follow its documentation, it's detailed and got plenty of examples. If
you want another process to serve TCP 80 remember to shut down the
apache service.


-- 
Andrea

From and.damore at gmail.com  Wed May  4 03:52:47 2016
From: and.damore at gmail.com (Andrea D'Amore)
Date: Wed, 4 May 2016 09:52:47 +0200
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
Message-ID: <CAMonFrSV8UAR0D94tqc1P40bvBKzQCuDmqmZe9Bsn47KPBt-vw@mail.gmail.com>

On 3 May 2016 at 22:05, Alex Hall <ahall at autodist.com> wrote:
> Most assume I'm using a virtual environment, which I'm not, because Python
> and other web projects are the only things on this server.

About this, python packages in Debian are often outdated, and some of
the more esoteric ones aren't in repo at all.
I'd use a dedicated environment for the app anyway if you plan to
upgrade the packages along the way or in a way that isn't tied to
debian's packages update cycle.


-- 
Andrea

From davidnieder at gmx.de  Wed May  4 06:41:54 2016
From: davidnieder at gmx.de (David Nieder)
Date: Wed, 4 May 2016 12:41:54 +0200
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
Message-ID: <095f0347-440f-aadf-187e-2167937e91a7@gmx.de>

Sorry for the second mail, Alex. I didn't reply to the list the first time.

On 03.05.2016 22:05, Alex Hall wrote:
> Hello list,
> My work has a Google Cloud account, so my boss just made me a Debian
> server. Being virtual, I can't physically access it, but I've got SSH and
> SCP, so  same thing. No remote GUI, though, just command line.
>
> I've been looking up how to deploy Flask on Linux, Debian specifically, for
> a couple hours. I'm getting a *lot* of hits, but nothing that seems to be
> in line with anything else. Some tell me to use WSGI (which I expected),
> but others say mod_wsgi, and others UWSGI. Mod_wsgi might mean, some say,
> compiling it for Python3, but I'm on Python 2.7.9? Most assume I'm using a
> virtual environment, which I'm not, because Python and other web projects
> are the only things on this server. The Flask docs talk about UWSGI, then
> something called MGinx? I'm using Apache2, again on Debian 8.
>
> Is there a single tutorial or article that most people recommend? I'm not
> very experienced with Debian, but I'm fine with a command line interface in
> general. I've got Flask, Flask-WTF, and the pyodbc module I'll need, and
> now just want to get Flask running with Apache2 so Apache can serve my
> Flask app. Thanks.
>

Hello Alex
I'm using Apache and mod_wsgi for some years now without any bigger
problems. There is a section in the flask docs:
http://flask.pocoo.org/docs/0.10/deploying/mod_wsgi/

Altough the Apache configuration changed a bit with 2.4, which is the
version that comes with Debian 8.

If you search for "debian 8 mod_wsgi" or "debian mod_wsgi flask" you
will find a lot of guides (deploying a django app is very similar to a
flask app and ubuntu is similar to debian)

For a basic configuration you just need two things. A wsgi-file that
imports you flask app and a WSGIScriptAlias directive in your
apache/vhost config.

Chances are it won't work on your first try so keep an eye on the apache
error logs which should by in /var/log/apache2

I also would recommend using virtualenv but you can start without.


Good luck ;)
David

>
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>


From ahall at autodist.com  Wed May  4 08:42:38 2016
From: ahall at autodist.com (Alex Hall)
Date: Wed, 4 May 2016 08:42:38 -0400
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <095f0347-440f-aadf-187e-2167937e91a7@gmx.de>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <095f0347-440f-aadf-187e-2167937e91a7@gmx.de>
Message-ID: <CA+Q8_JdTU8WUbDd43rPkYkZVDRjCLyLQ0xQfe6FEc2oQwPhJkQ@mail.gmail.com>

Thanks for the help thus far, everyone. Just a quick update to say that I
got Nginx installed on Jessie. The problem was that, though I'd killed
Apache2, it hadn't stopped. I stopped it again, and this time the Nginx
installation went smoothly. I still see the Apache index page, but I
suspect that's because Nginx is looking in /var/www and just serving the
index.html file it finds, which is the Apache file.

Anyway, since that works and people here seem to prefer Nginx, I'll try to
use Flask with Nginx first before reverting to Apache should I fail. Back
to the Digital Oceans tutorial I go.

On Wed, May 4, 2016 at 6:41 AM, David Nieder <davidnieder at gmx.de> wrote:

> Sorry for the second mail, Alex. I didn't reply to the list the first time.
>
> On 03.05.2016 22:05, Alex Hall wrote:
>
>> Hello list,
>> My work has a Google Cloud account, so my boss just made me a Debian
>> server. Being virtual, I can't physically access it, but I've got SSH and
>> SCP, so  same thing. No remote GUI, though, just command line.
>>
>> I've been looking up how to deploy Flask on Linux, Debian specifically,
>> for
>> a couple hours. I'm getting a *lot* of hits, but nothing that seems to be
>> in line with anything else. Some tell me to use WSGI (which I expected),
>> but others say mod_wsgi, and others UWSGI. Mod_wsgi might mean, some say,
>> compiling it for Python3, but I'm on Python 2.7.9? Most assume I'm using a
>> virtual environment, which I'm not, because Python and other web projects
>> are the only things on this server. The Flask docs talk about UWSGI, then
>> something called MGinx? I'm using Apache2, again on Debian 8.
>>
>> Is there a single tutorial or article that most people recommend? I'm not
>> very experienced with Debian, but I'm fine with a command line interface
>> in
>> general. I've got Flask, Flask-WTF, and the pyodbc module I'll need, and
>> now just want to get Flask running with Apache2 so Apache can serve my
>> Flask app. Thanks.
>>
>>
> Hello Alex
> I'm using Apache and mod_wsgi for some years now without any bigger
> problems. There is a section in the flask docs:
> http://flask.pocoo.org/docs/0.10/deploying/mod_wsgi/
>
> Altough the Apache configuration changed a bit with 2.4, which is the
> version that comes with Debian 8.
>
> If you search for "debian 8 mod_wsgi" or "debian mod_wsgi flask" you
> will find a lot of guides (deploying a django app is very similar to a
> flask app and ubuntu is similar to debian)
>
> For a basic configuration you just need two things. A wsgi-file that
> imports you flask app and a WSGIScriptAlias directive in your
> apache/vhost config.
>
> Chances are it won't work on your first try so keep an eye on the apache
> error logs which should by in /var/log/apache2
>
> I also would recommend using virtualenv but you can start without.
>
>
> Good luck ;)
> David
>
>
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>



-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ahall at autodist.com  Wed May  4 09:06:20 2016
From: ahall at autodist.com (Alex Hall)
Date: Wed, 4 May 2016 09:06:20 -0400
Subject: [Flask] slightly OT: packaging/moving flask app with virtualenv
Message-ID: <CA+Q8_Jcy=fqcvmb2dkiXvbo0DMg0ibqHqdya2OSmzpTpjvSdHA@mail.gmail.com>

Hey list,
At the urging of several members here, I'll give virtualenv a shot while
I'm installing and moving everything. Currently, I have my Flask app
working. It's small--just a couple pages with a bunch of JS--but does need
Pyodbc and WTF to work. Is there a way I can take my existing app, put it
into a virtual environment, and toss the whole thing on my Debian server?
I've installed virtualenv on the server already, as well as UWSGI. Is this
doable, or should I upload the entire directory and somehow put it into a
virtual environment on the server? Am I too late--that is, can this only be
done when you start a new project?

-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From coreybrett at gmail.com  Wed May  4 10:07:28 2016
From: coreybrett at gmail.com (Corey Boyle)
Date: Wed, 4 May 2016 10:07:28 -0400
Subject: [Flask] slightly OT: packaging/moving flask app with virtualenv
In-Reply-To: <CA+Q8_Jcy=fqcvmb2dkiXvbo0DMg0ibqHqdya2OSmzpTpjvSdHA@mail.gmail.com>
References: <CA+Q8_Jcy=fqcvmb2dkiXvbo0DMg0ibqHqdya2OSmzpTpjvSdHA@mail.gmail.com>
Message-ID: <CAD=ssw13CfnNcnPakfRpZBmwsUUfN+kxCLBPAj=+QhDQdv+mng@mail.gmail.com>

Virtualenv works by temporarily changing the active PATH so that your
scripts see an alternate (and isolated) Python interpreter and
libraries instead of seeing the globally installed ones.

So... I don't think it would ever be to late to start using a virtualenv.
Perhaps the only thing that could be effected is the paths of your
import statements.

Basically, you need to setup a virtualenv on the server, that matches
the virtualenv on your dev box, and tell Apache to use it when
executing your Python scripts. (I've never used Apache with Python, so
I can't help with that part.)

I also like using virtualenvwrapper, but I'm not sure if that would
help or hurt you at this point.

On debian...
apt install python-virtualenv
apt install virtualenvwrapper

What OS are you using for development?

On Wed, May 4, 2016 at 9:06 AM, Alex Hall <ahall at autodist.com> wrote:
> Hey list,
> At the urging of several members here, I'll give virtualenv a shot while I'm
> installing and moving everything. Currently, I have my Flask app working.
> It's small--just a couple pages with a bunch of JS--but does need Pyodbc and
> WTF to work. Is there a way I can take my existing app, put it into a
> virtual environment, and toss the whole thing on my Debian server? I've
> installed virtualenv on the server already, as well as UWSGI. Is this
> doable, or should I upload the entire directory and somehow put it into a
> virtual environment on the server? Am I too late--that is, can this only be
> done when you start a new project?
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>

From ahall at autodist.com  Wed May  4 10:49:11 2016
From: ahall at autodist.com (Alex Hall)
Date: Wed, 4 May 2016 10:49:11 -0400
Subject: [Flask] slightly OT: packaging/moving flask app with virtualenv
In-Reply-To: <CAD=ssw13CfnNcnPakfRpZBmwsUUfN+kxCLBPAj=+QhDQdv+mng@mail.gmail.com>
References: <CA+Q8_Jcy=fqcvmb2dkiXvbo0DMg0ibqHqdya2OSmzpTpjvSdHA@mail.gmail.com>
 <CAD=ssw13CfnNcnPakfRpZBmwsUUfN+kxCLBPAj=+QhDQdv+mng@mail.gmail.com>
Message-ID: <CA+Q8_Jer7ah9NtW3_8ob6hE3Hz4tdKP83EH7hwahsrQHomtFbA@mail.gmail.com>

I've been doing some reading and tests on this. I've gotten things to work
locally inside a virtual environment, including the all-important database
communication, so we're looking good there. The docs say, though, that
environments can't be moved between platforms; making this extra fun is
that I'm developing on Windows and wanting to serve files from Debian. I
suppose my next step is to get an environment set up on the Debian server
and make sure it works from there. Once it does, Nginx and UWSGI will be
brought into the mix.

As I understand it, I'd want to copy my entire project directory from my
Windows machine over to the server, probably in /var/www/mySite. I'd then
cd into /var/www, run virtualenv mySite, activate the new environment,
install my packages, and I should be set? Again, this isn't touching
serving for now, just getting my project to run. Fortunately, it doesn't
use hard-coded paths, output files, or anything else. I use {{url_for()}}
for all my links and script/style includes, and I never rely on
Windows-only libraries. This should be reasonably easy, assuming I have the
general process correct.

On Wed, May 4, 2016 at 10:07 AM, Corey Boyle <coreybrett at gmail.com> wrote:

> Virtualenv works by temporarily changing the active PATH so that your
> scripts see an alternate (and isolated) Python interpreter and
> libraries instead of seeing the globally installed ones.
>
> So... I don't think it would ever be to late to start using a virtualenv.
> Perhaps the only thing that could be effected is the paths of your
> import statements.
>
> Basically, you need to setup a virtualenv on the server, that matches
> the virtualenv on your dev box, and tell Apache to use it when
> executing your Python scripts. (I've never used Apache with Python, so
> I can't help with that part.)
>
> I also like using virtualenvwrapper, but I'm not sure if that would
> help or hurt you at this point.
>
> On debian...
> apt install python-virtualenv
> apt install virtualenvwrapper
>
> What OS are you using for development?
>
> On Wed, May 4, 2016 at 9:06 AM, Alex Hall <ahall at autodist.com> wrote:
> > Hey list,
> > At the urging of several members here, I'll give virtualenv a shot while
> I'm
> > installing and moving everything. Currently, I have my Flask app working.
> > It's small--just a couple pages with a bunch of JS--but does need Pyodbc
> and
> > WTF to work. Is there a way I can take my existing app, put it into a
> > virtual environment, and toss the whole thing on my Debian server? I've
> > installed virtualenv on the server already, as well as UWSGI. Is this
> > doable, or should I upload the entire directory and somehow put it into a
> > virtual environment on the server? Am I too late--that is, can this only
> be
> > done when you start a new project?
> >
> > --
> > Alex Hall
> > Automatic Distributors, IT department
> > ahall at autodist.com
> >
> > _______________________________________________
> > Flask mailing list
> > Flask at python.org
> > https://mail.python.org/mailman/listinfo/flask
> >
>



-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From Adam.Steer at anu.edu.au  Tue May  3 16:33:25 2016
From: Adam.Steer at anu.edu.au (Adam Steer)
Date: Tue, 3 May 2016 20:33:25 +0000
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
Message-ID: <4E066FD5-E4B6-4EE1-B5C7-7E5F53FD0805@anu.edu.au>

Hi Alex

(noting also Anthony?s quick response)

I?ve just jumped through this same set of hoops, going from ?no idea? to ?flask = deployed on WSGI?, on ubuntu (nearly debian) and CentOS.

After the fact, these docs make sense:

http://flask.pocoo.org/docs/0.10/deploying/mod_wsgi/

?but starting out I was completely at a loss about where to start. I think the Flask docs assume you just try it, and see :) So the examples are sometimes reliant on the developer  either already knowing a bunch, or trying things and learning by breaking things. Which is OK.

I drew heavily on the deployment style here:

https://www.digitalocean.com/community/tutorials/how-to-deploy-a-flask-application-on-an-ubuntu-vps

and here:

http://www.jakowicz.com/flask-apache-wsgi/

?but i did find the process pretty confusing. When I get into the office I can send some documented flask/wsgi/apache config files if that would help.

Just a quick note, it?s still helpful to use a virtual environment, because you never know when you might need to transport your app someplace else - and you can bundle up all the things your project needs.

Cheers

Adam



> On 4 May 2016, at 6:05 AM, Alex Hall <ahall at autodist.com> wrote:
> 
> Hello list,
> My work has a Google Cloud account, so my boss just made me a Debian server. Being virtual, I can't physically access it, but I've got SSH and SCP, so  same thing. No remote GUI, though, just command line.
> 
> I've been looking up how to deploy Flask on Linux, Debian specifically, for a couple hours. I'm getting a *lot* of hits, but nothing that seems to be in line with anything else. Some tell me to use WSGI (which I expected), but others say mod_wsgi, and others UWSGI. Mod_wsgi might mean, some say, compiling it for Python3, but I'm on Python 2.7.9? Most assume I'm using a virtual environment, which I'm not, because Python and other web projects are the only things on this server. The Flask docs talk about UWSGI, then something called MGinx? I'm using Apache2, again on Debian 8.
> 
> Is there a single tutorial or article that most people recommend? I'm not very experienced with Debian, but I'm fine with a command line interface in general. I've got Flask, Flask-WTF, and the pyodbc module I'll need, and now just want to get Flask running with Apache2 so Apache can serve my Flask app. Thanks.
> 
> -- 
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask


From Stephen.Mazzei at asrcfederal.com  Thu May  5 12:12:47 2016
From: Stephen.Mazzei at asrcfederal.com (Mazzei, Stephen Andrew)
Date: Thu, 5 May 2016 16:12:47 +0000
Subject: [Flask] Code evaluation
Message-ID: <FA1CCD1F7381504ABB7081B0462B9DDC01DAEA60@AFSY-MXDBP1.asrcfh.local>

Good afternoon,

I have been tasked with expanding an old php website to allow for additional databases. After my initial run through of this I decided it was just time for a complete redo of the environment. As I am not a web developer, I decided to try to move to a language I know a little more about and thus I found flask/python.  I have about 80% of the website migrated using random methods and practices I have found online I was wondering if there is anyone who knows flask/python/mysqld pretty well and can assist me and taking a look at the code, telling me how I am doing wrong, how to make simple improvements so I can speed this process up.

In my mind this is a pretty straight database to webpage application, with 90% of the entire page is just pulling the data and presenting it. We have a few sections under the "admin" pages to perform updates.


---
Stephen A. Mazzei
Systems Administrator | AFDS, ASRC Federal Data Solutions - P&G HPC Account | 513-634-9965


________________________________

The preceding message (including attachments) is covered by the Electronic Communication Privacy Act, 18 U.S.C. sections 2510-2512, is intended only for the person or entity to which it is addressed, and may contain information that is confidential, protected by attorney-client or other privilege, or otherwise protected from disclosure by law. If you are not the intended recipient, you are hereby notified that any retention, dissemination, distribution, or copying of this communication is strictly prohibited. Please reply to the sender that you have received the message in error and destroy the original message and all copies.
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From ahall at autodist.com  Thu May  5 12:30:22 2016
From: ahall at autodist.com (Alex Hall)
Date: Thu, 5 May 2016 12:30:22 -0400
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
 <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
 <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>
Message-ID: <CA+Q8_Jc8Np+YpU-oKeaaG7sXVmJUXqOYDO2-ApeB_BnwDMVpAg@mail.gmail.com>

Hey all,
Here's where I am on this journey. I spent the last day or so stuck on
getting my database and Debian server to talk. I FINALLY got that to work
just now, and my Flask app is able to start up. It seems the Flask server
can't serve to external web browsers, only those able to access localhost,
but I'm trusting that the app will now work as expected.

I've got Nginx installed and, it claims, starting up normally. I've
installed WSGI and UWSGI, and my Flask app is in a virtual environment,
which I can activate successfully. At last, I'm ready for the actual
configuration of the pieces to let Nginx serve Flask. Which leads to a
couple questions, for clarification.

1. Is Mod_WSGI only for Apache? Should I stick with UWSGI, given that I'm
using Nginx?

2. I read that UWSGI is also a web server, and that it's suggested to use
UWSGI with Nginx behind it. This seems more complicated than I expected.
Did I understand it right? Is this a choice, or the only/best way to set
things up?

3. When all this is up and running, will views be relative to my app, or
app/templates? That is, should I set the document root in Nginx to be
/var/www/myApp, or /var/www/myApp/templates? The myApp folder has run.py,
config.py, static/, and templates/.

On Wed, May 4, 2016 at 3:44 AM, Andrea D'Amore <and.damore at gmail.com> wrote:

> On 4 May 2016 at 00:02, Alex Hall <ahall at autodist.com> wrote:
> > Thanks guys. I'm intrigued by Nginx, after reading more about it. The
> > problem is that apt-get install nginx keeps failing, with some kind of
> > dependency problem, sudo or no sudo.
>
> That's odd for a freshly installed Jessie, it could be a clash with
> the installed apache service but since you didn't paste the actual APT
> error there's no way to tell.
>
> > I've stopped Apache, but still get the
> > error. Thus, I'd like to stick to Apache if I could, simply because it's
> > already installed and (to my knowledge) working.
>
> I stay away from apache httpd as much as I can, for a similar need I
> use lighttpd as proxy to the flask application on localhost.
>
> > This is a small, internal
> > site that doesn't need the efficiency of Nginx to run, and I'm having
> enough
> > problems with getting Flask to work that messing with installing a
> stubborn
> > Nginx doesn't seem the best way to stay sane.
>
> uwsgi is capable of directly serving the app, if it's a LAN app you're
> probably fine deploying the app with it, for a very low number of
> clients you could even use the builtin server.
> Just the other day I was reading again about flask deployment and I
> think I saw numbers as rule of thumb, 10 clients for builtin server
> and 100 for uwsgi IIRC but I may as well just making those up.
>
> If you decide to go with uwsgi, that I'd suggest in this case, just
> follow its documentation, it's detailed and got plenty of examples. If
> you want another process to serve TCP 80 remember to shut down the
> apache service.
>
>
> --
> Andrea
>



-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Thu May  5 13:30:20 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Thu, 5 May 2016 12:30:20 -0500
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CA+Q8_Jc8Np+YpU-oKeaaG7sXVmJUXqOYDO2-ApeB_BnwDMVpAg@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
 <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
 <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>
 <CA+Q8_Jc8Np+YpU-oKeaaG7sXVmJUXqOYDO2-ApeB_BnwDMVpAg@mail.gmail.com>
Message-ID: <CABC5zqhUte6=Nitf2jJPUwHqzgVpWCmoxxpGJkGKqmW+DK0e=A@mail.gmail.com>

Hey Alex,

Congrats on the progress so far. Let me see if I can clarify some things
for you

1. Is Mod_WSGI only for Apache? Should I stick with UWSGI, given that I'm
> using Nginx?
>

Yes. Mod_WSGI is essentially a router that passes the request from Apache
(the url requested, HTTP headers,  etc), and will accept the response from
your app and pass it back to Apache to send to the client. If you are using
Nginx, yes you should stick with uWSGI.



> 2. I read that UWSGI is also a web server, and that it's suggested to use
> UWSGI with Nginx behind it. This seems more complicated than I expected.
> Did I understand it right? Is this a choice, or the only/best way to set
> things up?
>

uWSGI can act as a standalone web-server for HTTP/S (
http://uwsgi-docs.readthedocs.io/en/latest/HTTP.html#the-uwsgi-http-https-router).
If you have a heavy site (i.e. hundreds+ of active users), you will waste
efficiency and capacity by having uWSGI handle your static files (i.e. your
JS, images, etc.), so it is recommended to hide uWSGI behind an HTTP server
(i.e. Nginx) and let it handle the static loads since they are
significantly better at serving static files.

No, you do not have to do this if you are building an internal or low use
site (but if the site is public, be prepared for traffic spikes that can
bring your site down, like slash-doting or reddit hug-of-deaths). Use the
`--http` option as suggesting in the above link.



> 3. When all this is up and running, will views be relative to my app, or
> app/templates? That is, should I set the document root in Nginx to be
> /var/www/myApp, or /var/www/myApp/templates? The myApp folder has run.py,
> config.py, static/, and templates/.


If you are serving your app behind Nginx, the main document root (or
location in nginx parlance), i.e. /, would be your app in wsgi (the
uwsgi_pass section). The only thing Nginx should serve would be your static
files in `static/` (which should be served as `/static/`.

I've stuck together a gist with some sanitized config files from a recent
project. You can find them here:
https://gist.github.com/ajford/32ca09c1bdb67e2211247f189aa2ae9a

It's got some complexity (the vars in the wsgi definitions) because this
was running on an applications server with three different Flask based apps
running behind Nginx. In my case, while the number of users was low (~10
max, more like a single user concurrent), I only had the one server
available, so they were placed behind Nginx to handle the virtual server
names (so the different apps wouldn't crash when serving). This may be
possible using uwsgi stand-alone, but I already knew how to do it in Nginx.

Hope this helps!



Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com
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From ahall at autodist.com  Thu May  5 13:56:21 2016
From: ahall at autodist.com (Alex Hall)
Date: Thu, 5 May 2016 13:56:21 -0400
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CABC5zqhUte6=Nitf2jJPUwHqzgVpWCmoxxpGJkGKqmW+DK0e=A@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
 <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
 <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>
 <CA+Q8_Jc8Np+YpU-oKeaaG7sXVmJUXqOYDO2-ApeB_BnwDMVpAg@mail.gmail.com>
 <CABC5zqhUte6=Nitf2jJPUwHqzgVpWCmoxxpGJkGKqmW+DK0e=A@mail.gmail.com>
Message-ID: <CA+Q8_JcB-oVRK+j5E6RWzZv5o+hUH4q3BxG0AwYVW_DvRs0vSg@mail.gmail.com>

Thanks for the answers!

At the risk of going a bit off topic, I made my Nginx and UWSGI
configuration files according to this guide:
http://www.markjberger.com/flask-with-virtualenv-uwsgi-nginx/

But am now seeing both applications fail to start. They offer only "See
systemctl status or journalctl" as a way to view the problem, but those
just tell me there was an exit code of 1. There's no "error in this file on
this line" or anything helpful. Is there a way to see exactly what's wrong?
I know it'll be some small syntax problem in one of the files, since I had
to write them by hand over SSH rather than pasting.

On Thu, May 5, 2016 at 1:30 PM, Anthony Ford <ford.anthonyj at gmail.com>
wrote:

> Hey Alex,
>
> Congrats on the progress so far. Let me see if I can clarify some things
> for you
>
> 1. Is Mod_WSGI only for Apache? Should I stick with UWSGI, given that I'm
>> using Nginx?
>>
>
> Yes. Mod_WSGI is essentially a router that passes the request from Apache
> (the url requested, HTTP headers,  etc), and will accept the response from
> your app and pass it back to Apache to send to the client. If you are using
> Nginx, yes you should stick with uWSGI.
>
>
>
>> 2. I read that UWSGI is also a web server, and that it's suggested to use
>> UWSGI with Nginx behind it. This seems more complicated than I expected.
>> Did I understand it right? Is this a choice, or the only/best way to set
>> things up?
>>
>
> uWSGI can act as a standalone web-server for HTTP/S (
> http://uwsgi-docs.readthedocs.io/en/latest/HTTP.html#the-uwsgi-http-https-router).
> If you have a heavy site (i.e. hundreds+ of active users), you will waste
> efficiency and capacity by having uWSGI handle your static files (i.e. your
> JS, images, etc.), so it is recommended to hide uWSGI behind an HTTP server
> (i.e. Nginx) and let it handle the static loads since they are
> significantly better at serving static files.
>
> No, you do not have to do this if you are building an internal or low use
> site (but if the site is public, be prepared for traffic spikes that can
> bring your site down, like slash-doting or reddit hug-of-deaths). Use the
> `--http` option as suggesting in the above link.
>
>
>
>> 3. When all this is up and running, will views be relative to my app, or
>> app/templates? That is, should I set the document root in Nginx to be
>> /var/www/myApp, or /var/www/myApp/templates? The myApp folder has run.py,
>> config.py, static/, and templates/.
>
>
> If you are serving your app behind Nginx, the main document root (or
> location in nginx parlance), i.e. /, would be your app in wsgi (the
> uwsgi_pass section). The only thing Nginx should serve would be your static
> files in `static/` (which should be served as `/static/`.
>
> I've stuck together a gist with some sanitized config files from a recent
> project. You can find them here:
> https://gist.github.com/ajford/32ca09c1bdb67e2211247f189aa2ae9a
>
> It's got some complexity (the vars in the wsgi definitions) because this
> was running on an applications server with three different Flask based apps
> running behind Nginx. In my case, while the number of users was low (~10
> max, more like a single user concurrent), I only had the one server
> available, so they were placed behind Nginx to handle the virtual server
> names (so the different apps wouldn't crash when serving). This may be
> possible using uwsgi stand-alone, but I already knew how to do it in Nginx.
>
> Hope this helps!
>
>
>
> Anthony Ford,
> KF5IBN,
> ford.anthonyj at gmail.com
>



-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ahall at autodist.com  Thu May  5 14:12:09 2016
From: ahall at autodist.com (Alex Hall)
Date: Thu, 5 May 2016 14:12:09 -0400
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CA+Q8_JcB-oVRK+j5E6RWzZv5o+hUH4q3BxG0AwYVW_DvRs0vSg@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
 <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
 <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>
 <CA+Q8_Jc8Np+YpU-oKeaaG7sXVmJUXqOYDO2-ApeB_BnwDMVpAg@mail.gmail.com>
 <CABC5zqhUte6=Nitf2jJPUwHqzgVpWCmoxxpGJkGKqmW+DK0e=A@mail.gmail.com>
 <CA+Q8_JcB-oVRK+j5E6RWzZv5o+hUH4q3BxG0AwYVW_DvRs0vSg@mail.gmail.com>
Message-ID: <CA+Q8_Jc=XJ+zgpdNcXTppa5nLy4mfRUmjmir2n5rgFxpYGvq8Q@mail.gmail.com>

Well, I found Nginx logs in /var/log/nginx, which is great. Nginx is now
working. I found UWSGI logs, too, but the only file in the folder is empty.
UWSGI refuses to start, and I don't get why. The only log file is empty,
and systemcpl status uwsgi.service doesn't really tell me anything. Anyone
seen UWSGI do this? Any idea where it puts log files that will explain the
problem? Thanks!

On Thu, May 5, 2016 at 1:56 PM, Alex Hall <ahall at autodist.com> wrote:

> Thanks for the answers!
>
> At the risk of going a bit off topic, I made my Nginx and UWSGI
> configuration files according to this guide:
> http://www.markjberger.com/flask-with-virtualenv-uwsgi-nginx/
>
> But am now seeing both applications fail to start. They offer only "See
> systemctl status or journalctl" as a way to view the problem, but those
> just tell me there was an exit code of 1. There's no "error in this file on
> this line" or anything helpful. Is there a way to see exactly what's wrong?
> I know it'll be some small syntax problem in one of the files, since I had
> to write them by hand over SSH rather than pasting.
>
> On Thu, May 5, 2016 at 1:30 PM, Anthony Ford <ford.anthonyj at gmail.com>
> wrote:
>
>> Hey Alex,
>>
>> Congrats on the progress so far. Let me see if I can clarify some things
>> for you
>>
>> 1. Is Mod_WSGI only for Apache? Should I stick with UWSGI, given that I'm
>>> using Nginx?
>>>
>>
>> Yes. Mod_WSGI is essentially a router that passes the request from Apache
>> (the url requested, HTTP headers,  etc), and will accept the response from
>> your app and pass it back to Apache to send to the client. If you are using
>> Nginx, yes you should stick with uWSGI.
>>
>>
>>
>>> 2. I read that UWSGI is also a web server, and that it's suggested to
>>> use UWSGI with Nginx behind it. This seems more complicated than I
>>> expected. Did I understand it right? Is this a choice, or the only/best way
>>> to set things up?
>>>
>>
>> uWSGI can act as a standalone web-server for HTTP/S (
>> http://uwsgi-docs.readthedocs.io/en/latest/HTTP.html#the-uwsgi-http-https-router).
>> If you have a heavy site (i.e. hundreds+ of active users), you will waste
>> efficiency and capacity by having uWSGI handle your static files (i.e. your
>> JS, images, etc.), so it is recommended to hide uWSGI behind an HTTP server
>> (i.e. Nginx) and let it handle the static loads since they are
>> significantly better at serving static files.
>>
>> No, you do not have to do this if you are building an internal or low use
>> site (but if the site is public, be prepared for traffic spikes that can
>> bring your site down, like slash-doting or reddit hug-of-deaths). Use the
>> `--http` option as suggesting in the above link.
>>
>>
>>
>>> 3. When all this is up and running, will views be relative to my app, or
>>> app/templates? That is, should I set the document root in Nginx to be
>>> /var/www/myApp, or /var/www/myApp/templates? The myApp folder has run.py,
>>> config.py, static/, and templates/.
>>
>>
>> If you are serving your app behind Nginx, the main document root (or
>> location in nginx parlance), i.e. /, would be your app in wsgi (the
>> uwsgi_pass section). The only thing Nginx should serve would be your static
>> files in `static/` (which should be served as `/static/`.
>>
>> I've stuck together a gist with some sanitized config files from a recent
>> project. You can find them here:
>> https://gist.github.com/ajford/32ca09c1bdb67e2211247f189aa2ae9a
>>
>> It's got some complexity (the vars in the wsgi definitions) because this
>> was running on an applications server with three different Flask based apps
>> running behind Nginx. In my case, while the number of users was low (~10
>> max, more like a single user concurrent), I only had the one server
>> available, so they were placed behind Nginx to handle the virtual server
>> names (so the different apps wouldn't crash when serving). This may be
>> possible using uwsgi stand-alone, but I already knew how to do it in Nginx.
>>
>> Hope this helps!
>>
>>
>>
>> Anthony Ford,
>> KF5IBN,
>> ford.anthonyj at gmail.com
>>
>
>
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>



-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From and.damore at gmail.com  Thu May  5 14:22:16 2016
From: and.damore at gmail.com (Andrea D'Amore)
Date: Thu, 5 May 2016 20:22:16 +0200
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <4E066FD5-E4B6-4EE1-B5C7-7E5F53FD0805@anu.edu.au>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <4E066FD5-E4B6-4EE1-B5C7-7E5F53FD0805@anu.edu.au>
Message-ID: <CAMonFrSRy6xd=Duv5x2=jn69iNo+ZN3KGHGzmieAd-wwPSJucA@mail.gmail.com>

On 3 May 2016 at 22:33, Adam Steer <Adam.Steer at anu.edu.au> wrote:
> I?ve just jumped through this same set of hoops, going from ?no idea? to ?flask = deployed on WSGI?, on ubuntu (nearly debian) and CentOS.
[?]
> I drew heavily on the deployment style here:
> https://www.digitalocean.com/community/tutorials/how-to-deploy-a-flask-application-on-an-ubuntu-vps

The main difference for the OP would be that on the Debian system he
mentioned he'll need a systemd unit file.

Btw I recently found a sysVinit debian server of mine I helped setting
up went down and there was no backup of the init.d script I wrote to
start the flask app with uwsgi. I'm reinstalling the app on an updated
system that now has of course systemd, and since I've only touched
systemd a couple of times, very sparse in time, I have to check the
docs from the beginning.

Does anyone have a uwsgi+flask systemd unit file example to share for
starting an app as a system service?


-- 
Andrea

P.S.
on other mailing lists I was explicitly told to "reply to all" when
replying to the list, what's the policy here?

From edwingate8 at gmail.com  Thu May  5 14:24:54 2016
From: edwingate8 at gmail.com (Edward Wingate)
Date: Thu, 5 May 2016 11:24:54 -0700
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CA+Q8_Jc=XJ+zgpdNcXTppa5nLy4mfRUmjmir2n5rgFxpYGvq8Q@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
 <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
 <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>
 <CA+Q8_Jc8Np+YpU-oKeaaG7sXVmJUXqOYDO2-ApeB_BnwDMVpAg@mail.gmail.com>
 <CABC5zqhUte6=Nitf2jJPUwHqzgVpWCmoxxpGJkGKqmW+DK0e=A@mail.gmail.com>
 <CA+Q8_JcB-oVRK+j5E6RWzZv5o+hUH4q3BxG0AwYVW_DvRs0vSg@mail.gmail.com>
 <CA+Q8_Jc=XJ+zgpdNcXTppa5nLy4mfRUmjmir2n5rgFxpYGvq8Q@mail.gmail.com>
Message-ID: <CAGMdoFntogtTQ8iNFMjjZsKWWapzXBVKAe8BMK+565GyPfbygw@mail.gmail.com>

> At the risk of going a bit off topic, I made my Nginx and UWSGI
> configuration files according to this guide:
> http://www.markjberger.com/flask-with-virtualenv-uwsgi-nginx/

Here is another guide based on supervisor instead of systemd startup I
followed a while back:
http://ewong.me/creating-and-deploying-flask-app-using-uwsgi-nginx-virtualenv-and-supervisor/

Maybe you can use bits of it to get your setup working.

From ahall at autodist.com  Thu May  5 14:36:08 2016
From: ahall at autodist.com (Alex Hall)
Date: Thu, 5 May 2016 14:36:08 -0400
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CAGMdoFntogtTQ8iNFMjjZsKWWapzXBVKAe8BMK+565GyPfbygw@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
 <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
 <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>
 <CA+Q8_Jc8Np+YpU-oKeaaG7sXVmJUXqOYDO2-ApeB_BnwDMVpAg@mail.gmail.com>
 <CABC5zqhUte6=Nitf2jJPUwHqzgVpWCmoxxpGJkGKqmW+DK0e=A@mail.gmail.com>
 <CA+Q8_JcB-oVRK+j5E6RWzZv5o+hUH4q3BxG0AwYVW_DvRs0vSg@mail.gmail.com>
 <CA+Q8_Jc=XJ+zgpdNcXTppa5nLy4mfRUmjmir2n5rgFxpYGvq8Q@mail.gmail.com>
 <CAGMdoFntogtTQ8iNFMjjZsKWWapzXBVKAe8BMK+565GyPfbygw@mail.gmail.com>
Message-ID: <CA+Q8_JexdrETrT7EvieQ7QAy0eY491UN98OEK7K=d6CgCyzqZA@mail.gmail.com>

Sorry for all the messages, but one more thing about UWSGI. There's one
item in the configuration file sample I found that I don't understand:

venv = /var/www/mysite/.env

I can't find this venv item anywhere so far, and the author of the post
where I found it never explained what it was for. Does it point to a
special folder used during runtime? Does that folder have to exist first?
Does this point to my app's folder, like chdir does? I don't have a .env
folder, and I'm wondering if that's my problem. I don't want to make one,
though, until I better understand what this venv item is actually trying to
do.

On Thu, May 5, 2016 at 2:24 PM, Edward Wingate <edwingate8 at gmail.com> wrote:

> > At the risk of going a bit off topic, I made my Nginx and UWSGI
> > configuration files according to this guide:
> > http://www.markjberger.com/flask-with-virtualenv-uwsgi-nginx/
>
> Here is another guide based on supervisor instead of systemd startup I
> followed a while back:
>
> http://ewong.me/creating-and-deploying-flask-app-using-uwsgi-nginx-virtualenv-and-supervisor/
>
> Maybe you can use bits of it to get your setup working.
>



-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From and.damore at gmail.com  Thu May  5 14:38:55 2016
From: and.damore at gmail.com (Andrea D'Amore)
Date: Thu, 5 May 2016 20:38:55 +0200
Subject: [Flask] Code evaluation
In-Reply-To: <FA1CCD1F7381504ABB7081B0462B9DDC01DAEA60@AFSY-MXDBP1.asrcfh.local>
References: <FA1CCD1F7381504ABB7081B0462B9DDC01DAEA60@AFSY-MXDBP1.asrcfh.local>
Message-ID: <CAMonFrT6ZBryDtOVqZV52yavxK36U8hUdbaGpWp6JqRnUXU7UA@mail.gmail.com>

On 5 May 2016 at 18:12, Mazzei, Stephen Andrew
<Stephen.Mazzei at asrcfederal.com> wrote:
> was wondering if there is anyone who knows flask/python/mysqld pretty well
> and can assist me and taking a look at the code, telling me how I am doing
> wrong, how to make simple improvements so I can speed this process up.

If you want an opinion just put the code -or a minimal example-
someplace like bitbucket or github and paste the link, if anyone's
willing to have a look he'll do.

> In my mind this is a pretty straight database to webpage application, with
> 90% of the entire page is just pulling the data and presenting it. We have a
> few sections under the ?admin? pages to perform updates.

For a similar task I used flask-admin to scaffold the admin part and
custom views for the frontend.
IIRC flask-admin does the frontend part as well so it could be a
single solution, but I struggled understanding its code at first and I
just did the front-end by hand.


-- 
Andrea

From coreybrett at gmail.com  Thu May  5 14:41:33 2016
From: coreybrett at gmail.com (Corey Boyle)
Date: Thu, 5 May 2016 14:41:33 -0400
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CA+Q8_JexdrETrT7EvieQ7QAy0eY491UN98OEK7K=d6CgCyzqZA@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
 <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
 <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>
 <CA+Q8_Jc8Np+YpU-oKeaaG7sXVmJUXqOYDO2-ApeB_BnwDMVpAg@mail.gmail.com>
 <CABC5zqhUte6=Nitf2jJPUwHqzgVpWCmoxxpGJkGKqmW+DK0e=A@mail.gmail.com>
 <CA+Q8_JcB-oVRK+j5E6RWzZv5o+hUH4q3BxG0AwYVW_DvRs0vSg@mail.gmail.com>
 <CA+Q8_Jc=XJ+zgpdNcXTppa5nLy4mfRUmjmir2n5rgFxpYGvq8Q@mail.gmail.com>
 <CAGMdoFntogtTQ8iNFMjjZsKWWapzXBVKAe8BMK+565GyPfbygw@mail.gmail.com>
 <CA+Q8_JexdrETrT7EvieQ7QAy0eY491UN98OEK7K=d6CgCyzqZA@mail.gmail.com>
Message-ID: <CAD=ssw2DzoEyj6ougix66Cv2FWY0Q-WvU4uemkcDR_H6JFEv=g@mail.gmail.com>

That's where you specify the location of your virtualenv.

On Thu, May 5, 2016 at 2:36 PM, Alex Hall <ahall at autodist.com> wrote:
> Sorry for all the messages, but one more thing about UWSGI. There's one item
> in the configuration file sample I found that I don't understand:
>
> venv = /var/www/mysite/.env
>
> I can't find this venv item anywhere so far, and the author of the post
> where I found it never explained what it was for. Does it point to a special
> folder used during runtime? Does that folder have to exist first? Does this
> point to my app's folder, like chdir does? I don't have a .env folder, and
> I'm wondering if that's my problem. I don't want to make one, though, until
> I better understand what this venv item is actually trying to do.
>
> On Thu, May 5, 2016 at 2:24 PM, Edward Wingate <edwingate8 at gmail.com> wrote:
>>
>> > At the risk of going a bit off topic, I made my Nginx and UWSGI
>> > configuration files according to this guide:
>> > http://www.markjberger.com/flask-with-virtualenv-uwsgi-nginx/
>>
>> Here is another guide based on supervisor instead of systemd startup I
>> followed a while back:
>>
>> http://ewong.me/creating-and-deploying-flask-app-using-uwsgi-nginx-virtualenv-and-supervisor/
>>
>> Maybe you can use bits of it to get your setup working.
>
>
>
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>

From Stephen.Mazzei at asrcfederal.com  Thu May  5 14:48:47 2016
From: Stephen.Mazzei at asrcfederal.com (Mazzei, Stephen Andrew)
Date: Thu, 5 May 2016 18:48:47 +0000
Subject: [Flask] Code evaluation
In-Reply-To: <CAMonFrT6ZBryDtOVqZV52yavxK36U8hUdbaGpWp6JqRnUXU7UA@mail.gmail.com>
References: <FA1CCD1F7381504ABB7081B0462B9DDC01DAEA60@AFSY-MXDBP1.asrcfh.local>
 <CAMonFrT6ZBryDtOVqZV52yavxK36U8hUdbaGpWp6JqRnUXU7UA@mail.gmail.com>
Message-ID: <FA1CCD1F7381504ABB7081B0462B9DDC01DAEBF9@AFSY-MXDBP1.asrcfh.local>

Uploaded project to gitlab

https://gitlab.com/mazzei.s/webtools.git

---
Stephen A. Mazzei
Systems Administrator | AFDS, ASRC Federal Data Solutions - P&G HPC Account | 513-634-9965

-----Original Message-----
From: Andrea D'Amore [mailto:and.damore at gmail.com]
Sent: Thursday, May 05, 2016 2:39 PM
To: Mazzei, Stephen Andrew <Stephen.Mazzei at asrcfederal.com>
Cc: flask at python.org
Subject: Re: [Flask] Code evaluation

On 5 May 2016 at 18:12, Mazzei, Stephen Andrew <Stephen.Mazzei at asrcfederal.com> wrote:
> was wondering if there is anyone who knows flask/python/mysqld pretty
> well and can assist me and taking a look at the code, telling me how I
> am doing wrong, how to make simple improvements so I can speed this process up.

If you want an opinion just put the code -or a minimal example- someplace like bitbucket or github and paste the link, if anyone's willing to have a look he'll do.

> In my mind this is a pretty straight database to webpage application,
> with 90% of the entire page is just pulling the data and presenting
> it. We have a few sections under the ?admin? pages to perform updates.

For a similar task I used flask-admin to scaffold the admin part and custom views for the frontend.
IIRC flask-admin does the frontend part as well so it could be a single solution, but I struggled understanding its code at first and I just did the front-end by hand.


--
Andrea


________________________________

The preceding message (including attachments) is covered by the Electronic Communication Privacy Act, 18 U.S.C. sections 2510-2512, is intended only for the person or entity to which it is addressed, and may contain information that is confidential, protected by attorney-client or other privilege, or otherwise protected from disclosure by law. If you are not the intended recipient, you are hereby notified that any retention, dissemination, distribution, or copying of this communication is strictly prohibited. Please reply to the sender that you have received the message in error and destroy the original message and all copies.

From ahall at autodist.com  Thu May  5 14:54:08 2016
From: ahall at autodist.com (Alex Hall)
Date: Thu, 5 May 2016 14:54:08 -0400
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CAD=ssw2DzoEyj6ougix66Cv2FWY0Q-WvU4uemkcDR_H6JFEv=g@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
 <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
 <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>
 <CA+Q8_Jc8Np+YpU-oKeaaG7sXVmJUXqOYDO2-ApeB_BnwDMVpAg@mail.gmail.com>
 <CABC5zqhUte6=Nitf2jJPUwHqzgVpWCmoxxpGJkGKqmW+DK0e=A@mail.gmail.com>
 <CA+Q8_JcB-oVRK+j5E6RWzZv5o+hUH4q3BxG0AwYVW_DvRs0vSg@mail.gmail.com>
 <CA+Q8_Jc=XJ+zgpdNcXTppa5nLy4mfRUmjmir2n5rgFxpYGvq8Q@mail.gmail.com>
 <CAGMdoFntogtTQ8iNFMjjZsKWWapzXBVKAe8BMK+565GyPfbygw@mail.gmail.com>
 <CA+Q8_JexdrETrT7EvieQ7QAy0eY491UN98OEK7K=d6CgCyzqZA@mail.gmail.com>
 <CAD=ssw2DzoEyj6ougix66Cv2FWY0Q-WvU4uemkcDR_H6JFEv=g@mail.gmail.com>
Message-ID: <CA+Q8_Jd2x7+oKYF5r1omZeXmZF0iuUut_XYgtcJdCLxzySP8+g@mail.gmail.com>

Okay, thanks. Changing venv to match chdir seems to have worked. I still
can't see my app, but at least UWSGI starts with no errors. Now to figure
out how to let Nginx serve the pages to other computers on the intranet;
this site is supposed to be a subdomain to a larger site, so I just want to
map its IP to a subdomain on our internal DNS. Yet, [server_ip]/mySiteName
returns a 404. Should be fun to troubleshoot. :)

On Thu, May 5, 2016 at 2:41 PM, Corey Boyle <coreybrett at gmail.com> wrote:

> That's where you specify the location of your virtualenv.
>
> On Thu, May 5, 2016 at 2:36 PM, Alex Hall <ahall at autodist.com> wrote:
> > Sorry for all the messages, but one more thing about UWSGI. There's one
> item
> > in the configuration file sample I found that I don't understand:
> >
> > venv = /var/www/mysite/.env
> >
> > I can't find this venv item anywhere so far, and the author of the post
> > where I found it never explained what it was for. Does it point to a
> special
> > folder used during runtime? Does that folder have to exist first? Does
> this
> > point to my app's folder, like chdir does? I don't have a .env folder,
> and
> > I'm wondering if that's my problem. I don't want to make one, though,
> until
> > I better understand what this venv item is actually trying to do.
> >
> > On Thu, May 5, 2016 at 2:24 PM, Edward Wingate <edwingate8 at gmail.com>
> wrote:
> >>
> >> > At the risk of going a bit off topic, I made my Nginx and UWSGI
> >> > configuration files according to this guide:
> >> > http://www.markjberger.com/flask-with-virtualenv-uwsgi-nginx/
> >>
> >> Here is another guide based on supervisor instead of systemd startup I
> >> followed a while back:
> >>
> >>
> http://ewong.me/creating-and-deploying-flask-app-using-uwsgi-nginx-virtualenv-and-supervisor/
> >>
> >> Maybe you can use bits of it to get your setup working.
> >
> >
> >
> >
> > --
> > Alex Hall
> > Automatic Distributors, IT department
> > ahall at autodist.com
> >
> > _______________________________________________
> > Flask mailing list
> > Flask at python.org
> > https://mail.python.org/mailman/listinfo/flask
> >
>



-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Thu May  5 16:21:10 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Thu, 5 May 2016 15:21:10 -0500
Subject: [Flask] Deploying Flask on Debian
In-Reply-To: <CA+Q8_Jd2x7+oKYF5r1omZeXmZF0iuUut_XYgtcJdCLxzySP8+g@mail.gmail.com>
References: <CA+Q8_Jdw4AB9OEpsXLNy3U_dQ+FA6pih7MR4J7gSpQ=gYUzhAA@mail.gmail.com>
 <CABC5zqiZbWnKQojO_U8wFVbV6Artupys1Zr8qqG-S_Nsx2r87w@mail.gmail.com>
 <CA+Q8_JdQpV+5gfO8ue1jdhR3p113s_MvecUzr+ec0ym_Q9W7RA@mail.gmail.com>
 <CAMonFrTCZv=aSywEC2696F0HV3q31m=N2fhMs0wwz=HBoaFm-Q@mail.gmail.com>
 <CA+Q8_Jc8Np+YpU-oKeaaG7sXVmJUXqOYDO2-ApeB_BnwDMVpAg@mail.gmail.com>
 <CABC5zqhUte6=Nitf2jJPUwHqzgVpWCmoxxpGJkGKqmW+DK0e=A@mail.gmail.com>
 <CA+Q8_JcB-oVRK+j5E6RWzZv5o+hUH4q3BxG0AwYVW_DvRs0vSg@mail.gmail.com>
 <CA+Q8_Jc=XJ+zgpdNcXTppa5nLy4mfRUmjmir2n5rgFxpYGvq8Q@mail.gmail.com>
 <CAGMdoFntogtTQ8iNFMjjZsKWWapzXBVKAe8BMK+565GyPfbygw@mail.gmail.com>
 <CA+Q8_JexdrETrT7EvieQ7QAy0eY491UN98OEK7K=d6CgCyzqZA@mail.gmail.com>
 <CAD=ssw2DzoEyj6ougix66Cv2FWY0Q-WvU4uemkcDR_H6JFEv=g@mail.gmail.com>
 <CA+Q8_Jd2x7+oKYF5r1omZeXmZF0iuUut_XYgtcJdCLxzySP8+g@mail.gmail.com>
Message-ID: <CABC5zqgvkY_-zT9LTYHA+jXZD+K665FOaSZLrQs3auEVqNbd+g@mail.gmail.com>

In your nginx conf for the specific app (the "server" section,
https://gist.github.com/ajford/32ca09c1bdb67e2211247f189aa2ae9a#file-foobarapp-conf-L1
for example), you set the servername that you want to serve a specific site
under (see
https://gist.github.com/ajford/32ca09c1bdb67e2211247f189aa2ae9a#file-foobarapp-conf-L3).
This is taken from the HTTP Host field. If you specify something on this
line, the server won't respond properly if you access via some other host.

For example,  if you set servername to myserver.example.com, and go to the
server's IP (i.e. 10.10.10.10/myapp/somepage), it won't respond, because
Nginx doesn't know to dispatch the request to your app. If you put
10.10.10.10 in your hostfile as myserver.example.com, and go to
myserver.example.com, it will work, as the Host field is now properly set.

If you have an internal DNS resolver, you can add an alias or mapping for
your server with the desired subdomain (this is what we did). If you are
testing, and don't want to/can't set up a DNS or host record in your host
file, or if you only have a single app, you can set the servername to *.
This will cause Nginx to dispatch _ALL_ requests to your app.


Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Thu, May 5, 2016 at 1:54 PM, Alex Hall <ahall at autodist.com> wrote:

> Okay, thanks. Changing venv to match chdir seems to have worked. I still
> can't see my app, but at least UWSGI starts with no errors. Now to figure
> out how to let Nginx serve the pages to other computers on the intranet;
> this site is supposed to be a subdomain to a larger site, so I just want to
> map its IP to a subdomain on our internal DNS. Yet, [server_ip]/mySiteName
> returns a 404. Should be fun to troubleshoot. :)
>
> On Thu, May 5, 2016 at 2:41 PM, Corey Boyle <coreybrett at gmail.com> wrote:
>
>> That's where you specify the location of your virtualenv.
>>
>> On Thu, May 5, 2016 at 2:36 PM, Alex Hall <ahall at autodist.com> wrote:
>> > Sorry for all the messages, but one more thing about UWSGI. There's one
>> item
>> > in the configuration file sample I found that I don't understand:
>> >
>> > venv = /var/www/mysite/.env
>> >
>> > I can't find this venv item anywhere so far, and the author of the post
>> > where I found it never explained what it was for. Does it point to a
>> special
>> > folder used during runtime? Does that folder have to exist first? Does
>> this
>> > point to my app's folder, like chdir does? I don't have a .env folder,
>> and
>> > I'm wondering if that's my problem. I don't want to make one, though,
>> until
>> > I better understand what this venv item is actually trying to do.
>> >
>> > On Thu, May 5, 2016 at 2:24 PM, Edward Wingate <edwingate8 at gmail.com>
>> wrote:
>> >>
>> >> > At the risk of going a bit off topic, I made my Nginx and UWSGI
>> >> > configuration files according to this guide:
>> >> > http://www.markjberger.com/flask-with-virtualenv-uwsgi-nginx/
>> >>
>> >> Here is another guide based on supervisor instead of systemd startup I
>> >> followed a while back:
>> >>
>> >>
>> http://ewong.me/creating-and-deploying-flask-app-using-uwsgi-nginx-virtualenv-and-supervisor/
>> >>
>> >> Maybe you can use bits of it to get your setup working.
>> >
>> >
>> >
>> >
>> > --
>> > Alex Hall
>> > Automatic Distributors, IT department
>> > ahall at autodist.com
>> >
>> > _______________________________________________
>> > Flask mailing list
>> > Flask at python.org
>> > https://mail.python.org/mailman/listinfo/flask
>> >
>>
>
>
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ahall at autodist.com  Fri May  6 10:15:29 2016
From: ahall at autodist.com (Alex Hall)
Date: Fri, 6 May 2016 10:15:29 -0400
Subject: [Flask] Debugging "internal server error" with Flask, UWSGI,
 and Nginx?
Message-ID: <CA+Q8_JerK-ZkG0Vyk-QPObemTbsF4GPCK8wTCaEPzVEQEHkqmw@mail.gmail.com>

Hi all,
I thought I'd start a new thread, as I've moved to a new step of this
process. Nginx is working, and I can visit it from another computer, so
that's great. The problem now is that, though I *should* see my Flask app's
index page, I instead see "internal server error". No message, no
traceback, no nothing. The Nginx log has no error in it, making me think
it's a UWSGI problem. However, /var/log/uwsgi/app/myApp.log is completely
blank. How would I go about determining the problem? I'm close to having
this all work, but with no error messages or logs, I'm kind of stuck for
the moment. Thanks for your patience and help.

-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From giannis.pin at gmail.com  Fri May  6 10:47:34 2016
From: giannis.pin at gmail.com (Ioannis Pinakoulakis)
Date: Fri, 6 May 2016 16:47:34 +0200
Subject: [Flask] Debugging "internal server error" with Flask, UWSGI,
 and Nginx?
In-Reply-To: <CA+Q8_JerK-ZkG0Vyk-QPObemTbsF4GPCK8wTCaEPzVEQEHkqmw@mail.gmail.com>
References: <CA+Q8_JerK-ZkG0Vyk-QPObemTbsF4GPCK8wTCaEPzVEQEHkqmw@mail.gmail.com>
Message-ID: <CB124F80-80B0-4D89-B0A4-619330E0038C@gmail.com>

Hi, 

Use the configuration propagate exceptions. You can find more details here: http://flask.pocoo.org/docs/0.10/config/

I hope this helps.

Regards,
Ioannis Pinakoulakis

6 maj 2016, 16:15, ?/? Alex Hall <ahall at autodist.com> ??????:

> Hi all,
> I thought I'd start a new thread, as I've moved to a new step of this process. Nginx is working, and I can visit it from another computer, so that's great. The problem now is that, though I *should* see my Flask app's index page, I instead see "internal server error". No message, no traceback, no nothing. The Nginx log has no error in it, making me think it's a UWSGI problem. However, /var/log/uwsgi/app/myApp.log is completely blank. How would I go about determining the problem? I'm close to having this all work, but with no error messages or logs, I'm kind of stuck for the moment. Thanks for your patience and help.
> 
> -- 
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
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From alejoar at gmail.com  Fri May  6 10:48:54 2016
From: alejoar at gmail.com (Alejo Arias)
Date: Fri, 6 May 2016 16:48:54 +0200
Subject: [Flask] Debugging "internal server error" with Flask, UWSGI,
 and Nginx?
In-Reply-To: <CA+Q8_JerK-ZkG0Vyk-QPObemTbsF4GPCK8wTCaEPzVEQEHkqmw@mail.gmail.com>
References: <CA+Q8_JerK-ZkG0Vyk-QPObemTbsF4GPCK8wTCaEPzVEQEHkqmw@mail.gmail.com>
Message-ID: <CAMfrFKS1ncDsziRR847cmQp3V2afQPtipEFUpZmqJoBedUnraQ@mail.gmail.com>

Hi Alex,

if the app is not running in debug mode, it won't output any errors on
response.

You can use the logging module and set, for example, a FileHandler to save
all the application errors/warnings to a file or even use the SMTPHandler
to make the app send you and email with the error every time something goes
wrong.

There's good info on how to do this here:
http://flask.pocoo.org/docs/0.10/errorhandling/

Regards,
Alejo



On 6 May 2016 at 16:15, Alex Hall <ahall at autodist.com> wrote:

> Hi all,
> I thought I'd start a new thread, as I've moved to a new step of this
> process. Nginx is working, and I can visit it from another computer, so
> that's great. The problem now is that, though I *should* see my Flask app's
> index page, I instead see "internal server error". No message, no
> traceback, no nothing. The Nginx log has no error in it, making me think
> it's a UWSGI problem. However, /var/log/uwsgi/app/myApp.log is completely
> blank. How would I go about determining the problem? I'm close to having
> this all work, but with no error messages or logs, I'm kind of stuck for
> the moment. Thanks for your patience and help.
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ford.anthonyj at gmail.com  Fri May  6 10:55:39 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Fri, 6 May 2016 09:55:39 -0500
Subject: [Flask] Debugging "internal server error" with Flask, UWSGI,
 and Nginx?
In-Reply-To: <CA+Q8_JerK-ZkG0Vyk-QPObemTbsF4GPCK8wTCaEPzVEQEHkqmw@mail.gmail.com>
References: <CA+Q8_JerK-ZkG0Vyk-QPObemTbsF4GPCK8wTCaEPzVEQEHkqmw@mail.gmail.com>
Message-ID: <CABC5zqgB9mdmWfd74-jiR7cQpVmmyfgfOjHV5kQLLa0Zzrv8Rg@mail.gmail.com>

Do you have DEBUG set in your app? If not, since you are still in testing,
you should go ahead and enable it.

That should get you the Werkzeug debugger, and help you resolve the problem.

How are you running uwsgi? Supervisor? Systemd?

You can also try running uwsgi standalone on the command line via the
--http option. I find you get a bit more feedback from that, since it
prints messages to the console. Once you have it running there, it should
be easier to get it running behind Nginx, since you know the app already
works.



Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Fri, May 6, 2016 at 9:15 AM, Alex Hall <ahall at autodist.com> wrote:

> Hi all,
> I thought I'd start a new thread, as I've moved to a new step of this
> process. Nginx is working, and I can visit it from another computer, so
> that's great. The problem now is that, though I *should* see my Flask app's
> index page, I instead see "internal server error". No message, no
> traceback, no nothing. The Nginx log has no error in it, making me think
> it's a UWSGI problem. However, /var/log/uwsgi/app/myApp.log is completely
> blank. How would I go about determining the problem? I'm close to having
> this all work, but with no error messages or logs, I'm kind of stuck for
> the moment. Thanks for your patience and help.
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ahall at autodist.com  Fri May  6 11:56:53 2016
From: ahall at autodist.com (Alex Hall)
Date: Fri, 6 May 2016 11:56:53 -0400
Subject: [Flask] Debugging "internal server error" with Flask, UWSGI,
 and Nginx?
In-Reply-To: <CB124F80-80B0-4D89-B0A4-619330E0038C@gmail.com>
References: <CA+Q8_JerK-ZkG0Vyk-QPObemTbsF4GPCK8wTCaEPzVEQEHkqmw@mail.gmail.com>
 <CB124F80-80B0-4D89-B0A4-619330E0038C@gmail.com>
Message-ID: <CA+Q8_JeF5D6GDRy=nWaDzhKM3KAQe_QG4h=psUpx06fZUJTSAg@mail.gmail.com>

Hi all,
Thanks for the quick responses. I should have said that yes, I'm running in
debug mode; that's part of why I was so surprised to see this error with
nothing else on the page.

I'm not sure how I'm running UWSGI. The command I use, on Debian 8, is:
sudo /etc/init.d/uwsgi [start/restart/stop]

It starts with no errors, so must be working fine. I'll try running it by
itself, which I've not done before, but keep in mind I have to be able to
access this from another computer on the network. I can't run any GUI on
this machine, so to test things, it has to be reachable on my physical
computer. Still, assuming UWSGI can do that, running it directly is a good
idea. Will that make me change any other configurations or settings, or can
I leave everything in place and just run UWSGI?

On Fri, May 6, 2016 at 10:47 AM, Ioannis Pinakoulakis <giannis.pin at gmail.com
> wrote:

> Hi,
>
> Use the configuration propagate exceptions. You can find more details
> here: http://flask.pocoo.org/docs/0.10/config/
>
> I hope this helps.
>
> Regards,
> Ioannis Pinakoulakis
>
> 6 maj 2016, 16:15, ?/? Alex Hall <ahall at autodist.com> ??????:
>
> Hi all,
> I thought I'd start a new thread, as I've moved to a new step of this
> process. Nginx is working, and I can visit it from another computer, so
> that's great. The problem now is that, though I *should* see my Flask app's
> index page, I instead see "internal server error". No message, no
> traceback, no nothing. The Nginx log has no error in it, making me think
> it's a UWSGI problem. However, /var/log/uwsgi/app/myApp.log is completely
> blank. How would I go about determining the problem? I'm close to having
> this all work, but with no error messages or logs, I'm kind of stuck for
> the moment. Thanks for your patience and help.
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>


-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From coreybrett at gmail.com  Fri May  6 21:28:23 2016
From: coreybrett at gmail.com (Corey Boyle)
Date: Fri, 6 May 2016 21:28:23 -0400
Subject: [Flask] add_template_global vs context_processor
Message-ID: <CAD=ssw2c_ej8SW5Cb+kNfXtCWSzL2aut3eByiXin2sFuVLiO3g@mail.gmail.com>

Does anyone know the difference between add_template_global and
context_processor?

I've used the template_global decorator to make a function available
in my templates, but I would also like to make a particular variable
available also.

I seems like they both do similar things, but I don't know if there's
something I am missing. Performance difference perhaps?

From lormayna at gmail.com  Sat May  7 18:18:26 2016
From: lormayna at gmail.com (Lorenzo Mainardi)
Date: Sun, 8 May 2016 00:18:26 +0200
Subject: [Flask] Problem with Flask-Admin
Message-ID: <CACLEbggQuOoqKo92cEAOrwFrbQzrJ_FCq00Wb+KyjmMHZry=sA@mail.gmail.com>

I have a problem with Flask-Admin

This is my app.py:

from flask import Flask

from flask_sqlalchemy import SQLAlchemy
from flask_bootstrap import Bootstrap
from flask_wtf.csrf import CsrfProtect

from flask.ext.admin import Admin

from flask.ext.admin.contrib.sqla import ModelView
import models

app = Flask(__name__)
app.secret_key = 'A0Zr98j/3yX R~XHH!jmN]LWX/,?RT'
Bootstrap(app)
app.config['SQLALCHEMY_DATABASE_URI'] =
'sqlite:////home/lorenzo/projects/digitel_task/app/app.db'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True
db = SQLAlchemy(app)
CsrfProtect(app)
admin = Admin(app, name="Digitel Task System Admin")
admin.add_view(ModelView(models.Status, db.session))

when i launch  main.py I'm getting this error:

(digitel_task)lorenzo at wolf:~/projects/digitel_task/app$ python main.py
Traceback (most recent call last):
  File "main.py", line 1, in <module>
    from models import *
  File "/home/lorenzo/projects/digitel_task/app/models.py", line 1, in
<module>
    from app import app,db
  File "/home/lorenzo/projects/digitel_task/app/app.py", line 20, in
<module>
    admin.add_view(ModelView(models.Status, db.session))
AttributeError: 'module' object has no attribute 'Status'

I really don't know where is the problem.
Could you help me?
Thank you

-- 
LORENZO MAINARDI
http://blog.mainardi.me
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From and.damore at gmail.com  Sun May  8 12:07:51 2016
From: and.damore at gmail.com (Andrea D'Amore)
Date: Sun, 8 May 2016 18:07:51 +0200
Subject: [Flask] Problem with Flask-Admin
In-Reply-To: <CACLEbggQuOoqKo92cEAOrwFrbQzrJ_FCq00Wb+KyjmMHZry=sA@mail.gmail.com>
References: <CACLEbggQuOoqKo92cEAOrwFrbQzrJ_FCq00Wb+KyjmMHZry=sA@mail.gmail.com>
Message-ID: <CAMonFrQnxDRnFVTL-4haCeRiVciq=iJ9n6cvcxLuRe-JaoCHUA@mail.gmail.com>

On 8 May 2016 at 00:18, Lorenzo Mainardi <lormayna at gmail.com> wrote:
> AttributeError: 'module' object has no attribute 'Status'
>
> I really don't know where is the problem.
> Could you help me?

You need to paste (or attach if pasting isn't feasible) models.py,
seems you think to have derived a SQLAlchemy Model there but the
interpreter doesn't agree.

As odd as it is you might be importing a "models" package from global
site-package, what does models.__file__ say?


-- 
Andrea

From jiy_jiaqi at 163.com  Sun May  8 22:45:52 2016
From: jiy_jiaqi at 163.com (jiy)
Date: Mon, 9 May 2016 10:45:52 +0800 (CST)
Subject: [Flask] Flask Digest, Vol 11, Issue 14
In-Reply-To: <mailman.41.1462723203.30065.flask@python.org>
References: <mailman.41.1462723203.30065.flask@python.org>
Message-ID: <3ca3031b.6223.15493681625.Coremail.jiy_jiaqi@163.com>

subject
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From lormayna at gmail.com  Mon May  9 05:51:09 2016
From: lormayna at gmail.com (Lorenzo Mainardi)
Date: Mon, 9 May 2016 11:51:09 +0200
Subject: [Flask] Problem with Flask-Admin
In-Reply-To: <CAMonFrQnxDRnFVTL-4haCeRiVciq=iJ9n6cvcxLuRe-JaoCHUA@mail.gmail.com>
References: <CACLEbggQuOoqKo92cEAOrwFrbQzrJ_FCq00Wb+KyjmMHZry=sA@mail.gmail.com>
 <CAMonFrQnxDRnFVTL-4haCeRiVciq=iJ9n6cvcxLuRe-JaoCHUA@mail.gmail.com>
Message-ID: <CACLEbgjV5-HzABFLZEoakgEmP5jRD=6-Rt2iKMjPaKAWzzJiGg@mail.gmail.com>

This is my model.py file:

(digitel_task)lorenzo at wolf:~/projects/digitel_task/app$ cat models.py

from app import app,db
class Task(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(40), unique=True)
start_time = db.Column(db.DateTime)
dpc = db.Column(db.DateTime)
duc = db.Column(db.DateTime)
end_time = db.Column(db.DateTime)
tech_priority = db.Column(db.Integer,
db.CheckConstraint('tech_priority>0'),
db.CheckConstraint('tech_priority<3'))
sales_priority = db.Column(db.Integer,
db.CheckConstraint('tech_priority>0'),
db.CheckConstraint('tech_priority<3'))
description = db.Column(db.String(3000), unique=True)
src_ip = db.Column(db.String(16), unique=True)
class Employer(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(50), unique=True)
class Status(db.Model):
id = db.Column(db.Integer, primary_key=True)
status = db.Column(db.String(50), unique=True)
color = db.Column(db.String, unique = True)
class MacroProject(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(40), unique=True)

2016-05-08 18:07 GMT+02:00 Andrea D'Amore <and.damore at gmail.com>:

> On 8 May 2016 at 00:18, Lorenzo Mainardi <lormayna at gmail.com> wrote:
> > AttributeError: 'module' object has no attribute 'Status'
> >
> > I really don't know where is the problem.
> > Could you help me?
>
> You need to paste (or attach if pasting isn't feasible) models.py,
> seems you think to have derived a SQLAlchemy Model there but the
> interpreter doesn't agree.
>
> As odd as it is you might be importing a "models" package from global
> site-package, what does models.__file__ say?
>
>
> --
> Andrea
>



-- 
LORENZO MAINARDI
http://blog.mainardi.me
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From ford.anthonyj at gmail.com  Mon May  9 07:52:45 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Mon, 9 May 2016 06:52:45 -0500
Subject: [Flask] Problem with Flask-Admin
In-Reply-To: <CACLEbgjV5-HzABFLZEoakgEmP5jRD=6-Rt2iKMjPaKAWzzJiGg@mail.gmail.com>
References: <CACLEbggQuOoqKo92cEAOrwFrbQzrJ_FCq00Wb+KyjmMHZry=sA@mail.gmail.com>
 <CAMonFrQnxDRnFVTL-4haCeRiVciq=iJ9n6cvcxLuRe-JaoCHUA@mail.gmail.com>
 <CACLEbgjV5-HzABFLZEoakgEmP5jRD=6-Rt2iKMjPaKAWzzJiGg@mail.gmail.com>
Message-ID: <CABC5zqgZUAZzEZpUxtHa43+X4_rZA33+jHG6a9qt8K9_2SuF2Q@mail.gmail.com>

Um.. Then where's main.py?

Can you paste as much of your app as you can disclose into a Gist/Pastebin?
Or possibly a github/gitlab repo?

Your app.py doesn't have the models import, so we can't see how things are
imported there.

Can you add a "print dir(models)" at the top of your main.py (after the
import of course)? Just to see what's in that module.
Also, like Andrea suggested, print models.__file__ as well. Just so we can
make sure you are importing the file you think you are.


Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Mon, May 9, 2016 at 4:51 AM, Lorenzo Mainardi <lormayna at gmail.com> wrote:

> This is my model.py file:
>
> (digitel_task)lorenzo at wolf:~/projects/digitel_task/app$ cat models.py
>
> from app import app,db
> class Task(db.Model):
> id = db.Column(db.Integer, primary_key=True)
> name = db.Column(db.String(40), unique=True)
> start_time = db.Column(db.DateTime)
> dpc = db.Column(db.DateTime)
> duc = db.Column(db.DateTime)
> end_time = db.Column(db.DateTime)
> tech_priority = db.Column(db.Integer,
> db.CheckConstraint('tech_priority>0'),
> db.CheckConstraint('tech_priority<3'))
> sales_priority = db.Column(db.Integer,
> db.CheckConstraint('tech_priority>0'),
> db.CheckConstraint('tech_priority<3'))
> description = db.Column(db.String(3000), unique=True)
> src_ip = db.Column(db.String(16), unique=True)
> class Employer(db.Model):
> id = db.Column(db.Integer, primary_key=True)
> name = db.Column(db.String(50), unique=True)
> class Status(db.Model):
> id = db.Column(db.Integer, primary_key=True)
> status = db.Column(db.String(50), unique=True)
> color = db.Column(db.String, unique = True)
> class MacroProject(db.Model):
> id = db.Column(db.Integer, primary_key=True)
> name = db.Column(db.String(40), unique=True)
>
> 2016-05-08 18:07 GMT+02:00 Andrea D'Amore <and.damore at gmail.com>:
>
>> On 8 May 2016 at 00:18, Lorenzo Mainardi <lormayna at gmail.com> wrote:
>> > AttributeError: 'module' object has no attribute 'Status'
>> >
>> > I really don't know where is the problem.
>> > Could you help me?
>>
>> You need to paste (or attach if pasting isn't feasible) models.py,
>> seems you think to have derived a SQLAlchemy Model there but the
>> interpreter doesn't agree.
>>
>> As odd as it is you might be importing a "models" package from global
>> site-package, what does models.__file__ say?
>>
>>
>> --
>> Andrea
>>
>
>
>
> --
> LORENZO MAINARDI
> http://blog.mainardi.me
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ddwiggins at advpubtech.com  Mon May  9 13:55:01 2016
From: ddwiggins at advpubtech.com (Don Dwiggins)
Date: Mon, 9 May 2016 10:55:01 -0700
Subject: [Flask] Question on Pluggable Views
Message-ID: <ngqitm$ae6$1@ger.gmane.org>

Has anyone here used pluggable views, as described in 
http://flask.pocoo.org/docs/0.10/views/ ?

I'm curious about the role of the first argument to the "as_view" method 
of the View class.  In the last example of the Basic Principle section, 
the text states " The class itself is instantiated with the parameters 
passed to the as_view() function.", but in the example, template_name is 
the only parameter to __init__; the first parameter to as_view, 
'about_page', doesn't seem to be used.

Experimenting a bit, I find that this first parameter needs to be 
present, and must be a string -- that's all.  Actually, it's the 
parameters after the first that get passed to the __init__ method.

In my code, I'm using an empty string for it in all cases, and it 
appears to work well.  However, I have a nagging feeling that this first 
parameter ought to be useful for something.

Any good thoughts welcome,
-- 

Don Dwiggins
Advanced Publishing Technology

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From lormayna at gmail.com  Mon May  9 16:06:52 2016
From: lormayna at gmail.com (Lorenzo Mainardi)
Date: Mon, 9 May 2016 22:06:52 +0200
Subject: [Flask] Problem with Flask-Admin
In-Reply-To: <CABC5zqgZUAZzEZpUxtHa43+X4_rZA33+jHG6a9qt8K9_2SuF2Q@mail.gmail.com>
References: <CACLEbggQuOoqKo92cEAOrwFrbQzrJ_FCq00Wb+KyjmMHZry=sA@mail.gmail.com>
 <CAMonFrQnxDRnFVTL-4haCeRiVciq=iJ9n6cvcxLuRe-JaoCHUA@mail.gmail.com>
 <CACLEbgjV5-HzABFLZEoakgEmP5jRD=6-Rt2iKMjPaKAWzzJiGg@mail.gmail.com>
 <CABC5zqgZUAZzEZpUxtHa43+X4_rZA33+jHG6a9qt8K9_2SuF2Q@mail.gmail.com>
Message-ID: <CACLEbgiFkdCspGEWUP7HOw9gW_nt8tU=OYuiD95HLmjCSMFgDA@mail.gmail.com>

You can find the code here:

https://bitbucket.org/lormayna/digi_task

This is print dir(models): ['__builtins__', '__doc__', '__file__',
'__name__', '__package__']
This is print
models.__file__: /home/lorenzo/projects/digitel_task/app/models.pyc

2016-05-09 13:52 GMT+02:00 Anthony Ford <ford.anthonyj at gmail.com>:

> Um.. Then where's main.py?
>
> Can you paste as much of your app as you can disclose into a
> Gist/Pastebin? Or possibly a github/gitlab repo?
>
> Your app.py doesn't have the models import, so we can't see how things are
> imported there.
>
> Can you add a "print dir(models)" at the top of your main.py (after the
> import of course)? Just to see what's in that module.
> Also, like Andrea suggested, print models.__file__ as well. Just so we can
> make sure you are importing the file you think you are.
>
>
> Anthony Ford,
> KF5IBN,
> ford.anthonyj at gmail.com
>
> On Mon, May 9, 2016 at 4:51 AM, Lorenzo Mainardi <lormayna at gmail.com>
> wrote:
>
>> This is my model.py file:
>>
>> (digitel_task)lorenzo at wolf:~/projects/digitel_task/app$ cat models.py
>>
>> from app import app,db
>> class Task(db.Model):
>> id = db.Column(db.Integer, primary_key=True)
>> name = db.Column(db.String(40), unique=True)
>> start_time = db.Column(db.DateTime)
>> dpc = db.Column(db.DateTime)
>> duc = db.Column(db.DateTime)
>> end_time = db.Column(db.DateTime)
>> tech_priority = db.Column(db.Integer,
>> db.CheckConstraint('tech_priority>0'),
>> db.CheckConstraint('tech_priority<3'))
>> sales_priority = db.Column(db.Integer,
>> db.CheckConstraint('tech_priority>0'),
>> db.CheckConstraint('tech_priority<3'))
>> description = db.Column(db.String(3000), unique=True)
>> src_ip = db.Column(db.String(16), unique=True)
>> class Employer(db.Model):
>> id = db.Column(db.Integer, primary_key=True)
>> name = db.Column(db.String(50), unique=True)
>> class Status(db.Model):
>> id = db.Column(db.Integer, primary_key=True)
>> status = db.Column(db.String(50), unique=True)
>> color = db.Column(db.String, unique = True)
>> class MacroProject(db.Model):
>> id = db.Column(db.Integer, primary_key=True)
>> name = db.Column(db.String(40), unique=True)
>>
>> 2016-05-08 18:07 GMT+02:00 Andrea D'Amore <and.damore at gmail.com>:
>>
>>> On 8 May 2016 at 00:18, Lorenzo Mainardi <lormayna at gmail.com> wrote:
>>> > AttributeError: 'module' object has no attribute 'Status'
>>> >
>>> > I really don't know where is the problem.
>>> > Could you help me?
>>>
>>> You need to paste (or attach if pasting isn't feasible) models.py,
>>> seems you think to have derived a SQLAlchemy Model there but the
>>> interpreter doesn't agree.
>>>
>>> As odd as it is you might be importing a "models" package from global
>>> site-package, what does models.__file__ say?
>>>
>>>
>>> --
>>> Andrea
>>>
>>
>>
>>
>> --
>> LORENZO MAINARDI
>> http://blog.mainardi.me
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>


-- 
LORENZO MAINARDI
http://blog.mainardi.me
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From lps at chireiden.net  Mon May  9 16:27:10 2016
From: lps at chireiden.net (Lars Peter =?UTF-8?B?U8O4bmRlcmdhYXJk?=)
Date: Mon, 9 May 2016 22:27:10 +0200
Subject: [Flask] Question on Pluggable Views
In-Reply-To: <ngqitm$ae6$1@ger.gmane.org>
References: <ngqitm$ae6$1@ger.gmane.org>
Message-ID: <20160509222710.5a974a59@ikarus>

On Mon, 9 May 2016 10:55:01 -0700 Don Dwiggins
<ddwiggins at advpubtech.com> wrote:

> Has anyone here used pluggable views, as described in 
> http://flask.pocoo.org/docs/0.10/views/ ?
> 
> I'm curious about the role of the first argument to the "as_view"
> method of the View class.  In the last example of the Basic Principle
> section, the text states " The class itself is instantiated with the
> parameters passed to the as_view() function.", but in the example,
> template_name is the only parameter to __init__; the first parameter
> to as_view, 'about_page', doesn't seem to be used.
> 
> Experimenting a bit, I find that this first parameter needs to be 
> present, and must be a string -- that's all.  Actually, it's the 
> parameters after the first that get passed to the __init__ method.
> 
> In my code, I'm using an empty string for it in all cases, and it 
> appears to work well.  However, I have a nagging feeling that this
> first parameter ought to be useful for something.
> 
> Any good thoughts welcome,

The first arg "name" is used by the as_view classmethod itself. Any
other argument that follows is used to instantiate the class.

https://github.com/pallets/flask/blob/0.10.1/flask/views.py#L73

The "name" is the name of the endpoint. You should always specifiy it.
It's the name you use, when you build URLs using the url_for() function.

-- 
nitori
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From and.damore at gmail.com  Tue May 10 08:47:32 2016
From: and.damore at gmail.com (Andrea D'Amore)
Date: Tue, 10 May 2016 14:47:32 +0200
Subject: [Flask] Problem with Flask-Admin
In-Reply-To: <CACLEbgiFkdCspGEWUP7HOw9gW_nt8tU=OYuiD95HLmjCSMFgDA@mail.gmail.com>
References: <CACLEbggQuOoqKo92cEAOrwFrbQzrJ_FCq00Wb+KyjmMHZry=sA@mail.gmail.com>
 <CAMonFrQnxDRnFVTL-4haCeRiVciq=iJ9n6cvcxLuRe-JaoCHUA@mail.gmail.com>
 <CACLEbgjV5-HzABFLZEoakgEmP5jRD=6-Rt2iKMjPaKAWzzJiGg@mail.gmail.com>
 <CABC5zqgZUAZzEZpUxtHa43+X4_rZA33+jHG6a9qt8K9_2SuF2Q@mail.gmail.com>
 <CACLEbgiFkdCspGEWUP7HOw9gW_nt8tU=OYuiD95HLmjCSMFgDA@mail.gmail.com>
Message-ID: <CAMonFrQJ5Y_P=ZZet=6Y0rY5n8dupiLL5_=r4Vnf7gqdA3qwtA@mail.gmail.com>

On 9 May 2016 at 22:06, Lorenzo Mainardi <lormayna at gmail.com> wrote:
> You can find the code here:
> https://bitbucket.org/lormayna/digi_task

> This is print dir(models): ['__builtins__', '__doc__', '__file__',
> '__name__', '__package__']
> This is print models.__file__:
> /home/lorenzo/projects/digitel_task/app/models.pyc

I don't understand exactly what the issue is but I think it's a
circular dependency one between app and models modules: app.py is
importing from models.py that is importing from app.
If you put print dir(models) just under "import models" in app.py you
can see in the output that it's run twice, the first time the module
has no attributes, and that's where you're getting the runtime error.
The second time the models module is correctly showing the classes you
defined, and that's the one you get if you try the code in an
interactive interpreter and then try to manually execute
admin.add_view() with models.Status, at that point models module is
populated.


-- 
Andrea

From ahall at autodist.com  Tue May 10 12:07:32 2016
From: ahall at autodist.com (Alex Hall)
Date: Tue, 10 May 2016 12:07:32 -0400
Subject: [Flask] Finding error in Flask app while running under web server
Message-ID: <CA+Q8_Jcn61fochtNa-bdAwMKkEXrBCG-ApmBmPrGXv-2mf+r-w@mail.gmail.com>

Hello list,
I'm delighted to say that, not five minutes ago, my app ran under Nginx!
I'm still not totally sure how it's doing it, but it is. Now, though, I'm
running into a problem: something is timing out. I can see that in the
Nginx log, and my page displays a generic error message, one it shows if
anything goes sideways while talking to the database or interpreting
results.

I'm pretty sure the issue is in my app's communication with our AS400, but
I don't know how to double check that. The UWSGI log for this app is empty,
which doesn't surprise me as this is likely a problem with my app's code.
Is Python logging the best way to go here, or is there some automated log
I'm overlooking?

Thanks for any answers, and thanks again for everyone's help. I'm thrilled
that this finally--almost--works. It renders properly, which is the main
thing. Hopefully, it'll all be downhill from here. :)

-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Tue May 10 12:35:20 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Tue, 10 May 2016 11:35:20 -0500
Subject: [Flask] Finding error in Flask app while running under web
 server
In-Reply-To: <CA+Q8_Jcn61fochtNa-bdAwMKkEXrBCG-ApmBmPrGXv-2mf+r-w@mail.gmail.com>
References: <CA+Q8_Jcn61fochtNa-bdAwMKkEXrBCG-ApmBmPrGXv-2mf+r-w@mail.gmail.com>
Message-ID: <CABC5zqjgVTmhx+bgQAU1aYa1MDqB0BGLDELeQ3juHMN9_vPGcw@mail.gmail.com>

Yeah, your best bet is probably to try some logging in Python.

If I'm not mistaken, you can cheat by just "print"ing to STDOUT, and uwsgi
should record that in its log, but in the long run, setting up proper
logging is probably best (even with how much of a PITA the python logging
module is).



Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Tue, May 10, 2016 at 11:07 AM, Alex Hall <ahall at autodist.com> wrote:

> Hello list,
> I'm delighted to say that, not five minutes ago, my app ran under Nginx!
> I'm still not totally sure how it's doing it, but it is. Now, though, I'm
> running into a problem: something is timing out. I can see that in the
> Nginx log, and my page displays a generic error message, one it shows if
> anything goes sideways while talking to the database or interpreting
> results.
>
> I'm pretty sure the issue is in my app's communication with our AS400, but
> I don't know how to double check that. The UWSGI log for this app is empty,
> which doesn't surprise me as this is likely a problem with my app's code.
> Is Python logging the best way to go here, or is there some automated log
> I'm overlooking?
>
> Thanks for any answers, and thanks again for everyone's help. I'm thrilled
> that this finally--almost--works. It renders properly, which is the main
> thing. Hopefully, it'll all be downhill from here. :)
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ahall at autodist.com  Tue May 10 12:41:57 2016
From: ahall at autodist.com (Alex Hall)
Date: Tue, 10 May 2016 12:41:57 -0400
Subject: [Flask] Finding error in Flask app while running under web
 server
In-Reply-To: <CABC5zqjgVTmhx+bgQAU1aYa1MDqB0BGLDELeQ3juHMN9_vPGcw@mail.gmail.com>
References: <CA+Q8_Jcn61fochtNa-bdAwMKkEXrBCG-ApmBmPrGXv-2mf+r-w@mail.gmail.com>
 <CABC5zqjgVTmhx+bgQAU1aYa1MDqB0BGLDELeQ3juHMN9_vPGcw@mail.gmail.com>
Message-ID: <CA+Q8_JeO4NTizGHsb-be1QnDUSsEKZLVhrigi9q__itnTEHGuw@mail.gmail.com>

Thanks, good to know I'm not missing another automatic log file somewhere.

I also discovered that you can set catch-exceptions in UWSGI to true, and
that will cause any problems to be printed. That may not help Flask
directly, but it explains why my UWSGI log was always empty, as it showed a
permissions problem with the file. If I printed with Flask, I wouldn't have
seen anything, and I would never have known why were it not for
catch-exceptions.

On Tue, May 10, 2016 at 12:35 PM, Anthony Ford <ford.anthonyj at gmail.com>
wrote:

> Yeah, your best bet is probably to try some logging in Python.
>
> If I'm not mistaken, you can cheat by just "print"ing to STDOUT, and uwsgi
> should record that in its log, but in the long run, setting up proper
> logging is probably best (even with how much of a PITA the python logging
> module is).
>
>
>
> Anthony Ford,
> KF5IBN,
> ford.anthonyj at gmail.com
>
> On Tue, May 10, 2016 at 11:07 AM, Alex Hall <ahall at autodist.com> wrote:
>
>> Hello list,
>> I'm delighted to say that, not five minutes ago, my app ran under Nginx!
>> I'm still not totally sure how it's doing it, but it is. Now, though, I'm
>> running into a problem: something is timing out. I can see that in the
>> Nginx log, and my page displays a generic error message, one it shows if
>> anything goes sideways while talking to the database or interpreting
>> results.
>>
>> I'm pretty sure the issue is in my app's communication with our AS400,
>> but I don't know how to double check that. The UWSGI log for this app is
>> empty, which doesn't surprise me as this is likely a problem with my app's
>> code. Is Python logging the best way to go here, or is there some automated
>> log I'm overlooking?
>>
>> Thanks for any answers, and thanks again for everyone's help. I'm
>> thrilled that this finally--almost--works. It renders properly, which is
>> the main thing. Hopefully, it'll all be downhill from here. :)
>>
>> --
>> Alex Hall
>> Automatic Distributors, IT department
>> ahall at autodist.com
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>


-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Tue May 10 12:50:56 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Tue, 10 May 2016 11:50:56 -0500
Subject: [Flask] Finding error in Flask app while running under web
 server
In-Reply-To: <CA+Q8_JeO4NTizGHsb-be1QnDUSsEKZLVhrigi9q__itnTEHGuw@mail.gmail.com>
References: <CA+Q8_Jcn61fochtNa-bdAwMKkEXrBCG-ApmBmPrGXv-2mf+r-w@mail.gmail.com>
 <CABC5zqjgVTmhx+bgQAU1aYa1MDqB0BGLDELeQ3juHMN9_vPGcw@mail.gmail.com>
 <CA+Q8_JeO4NTizGHsb-be1QnDUSsEKZLVhrigi9q__itnTEHGuw@mail.gmail.com>
Message-ID: <CABC5zqgvY6NgqbCorHFW_5_FW22n+MVYWCMvppUR-O=Q8novJw@mail.gmail.com>

Good catch (no pun intended).

Permissions with log files/dirs can be a big (and annoying) problem. You
may have already found it, but there's a way to have uWSGI change log
permissions (assuming you are starting uWSGI with high enough privs, such
as using the uWSGI emperor or your systemd/sysinit). I use it in the gist I
sent earlier (
https://gist.github.com/ajford/32ca09c1bdb67e2211247f189aa2ae9a#file-foobar-wsgi-L20),
"log-chmod", and it's fellow, "log-chown". Only works if you do start with
high/root privs and downgrade with the "uid" and "gid" flags.

Oh software, the realm of debugging and logging.

Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Tue, May 10, 2016 at 11:41 AM, Alex Hall <ahall at autodist.com> wrote:

> Thanks, good to know I'm not missing another automatic log file somewhere.
>
> I also discovered that you can set catch-exceptions in UWSGI to true, and
> that will cause any problems to be printed. That may not help Flask
> directly, but it explains why my UWSGI log was always empty, as it showed a
> permissions problem with the file. If I printed with Flask, I wouldn't have
> seen anything, and I would never have known why were it not for
> catch-exceptions.
>
>
> On Tue, May 10, 2016 at 12:35 PM, Anthony Ford <ford.anthonyj at gmail.com>
> wrote:
>
>> Yeah, your best bet is probably to try some logging in Python.
>>
>> If I'm not mistaken, you can cheat by just "print"ing to STDOUT, and
>> uwsgi should record that in its log, but in the long run, setting up proper
>> logging is probably best (even with how much of a PITA the python logging
>> module is).
>>
>>
>>
>> Anthony Ford,
>> KF5IBN,
>> ford.anthonyj at gmail.com
>>
>> On Tue, May 10, 2016 at 11:07 AM, Alex Hall <ahall at autodist.com> wrote:
>>
>>> Hello list,
>>> I'm delighted to say that, not five minutes ago, my app ran under Nginx!
>>> I'm still not totally sure how it's doing it, but it is. Now, though, I'm
>>> running into a problem: something is timing out. I can see that in the
>>> Nginx log, and my page displays a generic error message, one it shows if
>>> anything goes sideways while talking to the database or interpreting
>>> results.
>>>
>>> I'm pretty sure the issue is in my app's communication with our AS400,
>>> but I don't know how to double check that. The UWSGI log for this app is
>>> empty, which doesn't surprise me as this is likely a problem with my app's
>>> code. Is Python logging the best way to go here, or is there some automated
>>> log I'm overlooking?
>>>
>>> Thanks for any answers, and thanks again for everyone's help. I'm
>>> thrilled that this finally--almost--works. It renders properly, which is
>>> the main thing. Hopefully, it'll all be downhill from here. :)
>>>
>>> --
>>> Alex Hall
>>> Automatic Distributors, IT department
>>> ahall at autodist.com
>>>
>>> _______________________________________________
>>> Flask mailing list
>>> Flask at python.org
>>> https://mail.python.org/mailman/listinfo/flask
>>>
>>>
>>
>
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
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From ahall at autodist.com  Tue May 10 15:02:07 2016
From: ahall at autodist.com (Alex Hall)
Date: Tue, 10 May 2016 15:02:07 -0400
Subject: [Flask] Restarting Flask app?
Message-ID: <CA+Q8_Jck8wRXEx9Dhz=UGOEwA3TxxxTfVbYdmgWcjxKg6Xms-w@mail.gmail.com>

Hi all,
It just struck me that restarting a Flask app after modifying the Python
code isn't obvious. Do I restart UWSGI, Nginx, or both? In UWSGI, I
specified "master=true", which I read lets you apply changes without
restarting. Therefore, do I need to restart anything, or simply save my
changes to the code and watch it happen automatically?

-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From gatzby3jr at gmail.com  Tue May 10 15:11:53 2016
From: gatzby3jr at gmail.com (Brian O'Connor)
Date: Tue, 10 May 2016 15:11:53 -0400
Subject: [Flask] Restarting Flask app?
In-Reply-To: <CA+Q8_Jck8wRXEx9Dhz=UGOEwA3TxxxTfVbYdmgWcjxKg6Xms-w@mail.gmail.com>
References: <CA+Q8_Jck8wRXEx9Dhz=UGOEwA3TxxxTfVbYdmgWcjxKg6Xms-w@mail.gmail.com>
Message-ID: <CANaJ4bvtVjPVCpcWbw99+92VzhsfXZaVnz2ztRFSjvOt5L6opg@mail.gmail.com>

This page may be of use to you:
http://uwsgi-docs.readthedocs.io/en/latest/articles/TheArtOfGracefulReloading.html

Personally, I use the --touch-reload option.

On Tue, May 10, 2016 at 3:02 PM, Alex Hall <ahall at autodist.com> wrote:

> Hi all,
> It just struck me that restarting a Flask app after modifying the Python
> code isn't obvious. Do I restart UWSGI, Nginx, or both? In UWSGI, I
> specified "master=true", which I read lets you apply changes without
> restarting. Therefore, do I need to restart anything, or simply save my
> changes to the code and watch it happen automatically?
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>


-- 
Brian O'Connor
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From davidism at gmail.com  Tue May 10 15:05:39 2016
From: davidism at gmail.com (David Lord)
Date: Tue, 10 May 2016 12:05:39 -0700
Subject: [Flask] Restarting Flask app?
In-Reply-To: <CA+Q8_Jck8wRXEx9Dhz=UGOEwA3TxxxTfVbYdmgWcjxKg6Xms-w@mail.gmail.com>
References: <CA+Q8_Jck8wRXEx9Dhz=UGOEwA3TxxxTfVbYdmgWcjxKg6Xms-w@mail.gmail.com>
Message-ID: <CADtfqL5Kuk908S_EEBQN-F_JPG+M5kEbjyXzL_P3KP=pEXHAkQ@mail.gmail.com>

You restart the process running your app, which is uWSGI.  `master` does
not mean that, it means that you're starting a process that will manage
other processes.  Although there are solutions for restarting when files
change, you should always restart manually in production.

On Tue, May 10, 2016 at 12:02 PM, Alex Hall <ahall at autodist.com> wrote:

> Hi all,
> It just struck me that restarting a Flask app after modifying the Python
> code isn't obvious. Do I restart UWSGI, Nginx, or both? In UWSGI, I
> specified "master=true", which I read lets you apply changes without
> restarting. Therefore, do I need to restart anything, or simply save my
> changes to the code and watch it happen automatically?
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ahall at autodist.com  Tue May 10 15:26:20 2016
From: ahall at autodist.com (Alex Hall)
Date: Tue, 10 May 2016 15:26:20 -0400
Subject: [Flask] Restarting Flask app?
In-Reply-To: <CADtfqL5Kuk908S_EEBQN-F_JPG+M5kEbjyXzL_P3KP=pEXHAkQ@mail.gmail.com>
References: <CA+Q8_Jck8wRXEx9Dhz=UGOEwA3TxxxTfVbYdmgWcjxKg6Xms-w@mail.gmail.com>
 <CADtfqL5Kuk908S_EEBQN-F_JPG+M5kEbjyXzL_P3KP=pEXHAkQ@mail.gmail.com>
Message-ID: <CA+Q8_Jf5-yp1dpxxfcfM8f2bcQebxSFqrRq5_XbQ8CYpHiviiw@mail.gmail.com>

Great, thanks. So UWSGI is what I'd restart. There must be a way to script
all this, so I don't have to keep doing
sudo uwsgi --ini-paste /etc/uwsgi/apps-enabled/myApp.ini

Great point about not auto-restarting on a production site. For testing
it's super convenient, but you're right, it would be horrible on something
real, especially as I'm in the habbit of hitting ctrl-s every few minutes
no matter whether my code is valid at the moment or not.

On Tue, May 10, 2016 at 3:05 PM, David Lord <davidism at gmail.com> wrote:

> You restart the process running your app, which is uWSGI.  `master` does
> not mean that, it means that you're starting a process that will manage
> other processes.  Although there are solutions for restarting when files
> change, you should always restart manually in production.
>
> On Tue, May 10, 2016 at 12:02 PM, Alex Hall <ahall at autodist.com> wrote:
>
>> Hi all,
>> It just struck me that restarting a Flask app after modifying the Python
>> code isn't obvious. Do I restart UWSGI, Nginx, or both? In UWSGI, I
>> specified "master=true", which I read lets you apply changes without
>> restarting. Therefore, do I need to restart anything, or simply save my
>> changes to the code and watch it happen automatically?
>>
>> --
>> Alex Hall
>> Automatic Distributors, IT department
>> ahall at autodist.com
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>


-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From davidism at gmail.com  Tue May 10 16:18:15 2016
From: davidism at gmail.com (David Lord)
Date: Tue, 10 May 2016 13:18:15 -0700
Subject: [Flask] Restarting Flask app?
In-Reply-To: <CA+Q8_Jf5-yp1dpxxfcfM8f2bcQebxSFqrRq5_XbQ8CYpHiviiw@mail.gmail.com>
References: <CA+Q8_Jck8wRXEx9Dhz=UGOEwA3TxxxTfVbYdmgWcjxKg6Xms-w@mail.gmail.com>
 <CADtfqL5Kuk908S_EEBQN-F_JPG+M5kEbjyXzL_P3KP=pEXHAkQ@mail.gmail.com>
 <CA+Q8_Jf5-yp1dpxxfcfM8f2bcQebxSFqrRq5_XbQ8CYpHiviiw@mail.gmail.com>
Message-ID: <CADtfqL7ZOji3Xdtfyw_9X=1iGL=QUJ9M_MLD6y66RG+uca8PQw@mail.gmail.com>

http://supervisord.org/

On Tue, May 10, 2016 at 12:26 PM, Alex Hall <ahall at autodist.com> wrote:

> Great, thanks. So UWSGI is what I'd restart. There must be a way to script
> all this, so I don't have to keep doing
> sudo uwsgi --ini-paste /etc/uwsgi/apps-enabled/myApp.ini
>
> Great point about not auto-restarting on a production site. For testing
> it's super convenient, but you're right, it would be horrible on something
> real, especially as I'm in the habbit of hitting ctrl-s every few minutes
> no matter whether my code is valid at the moment or not.
>
> On Tue, May 10, 2016 at 3:05 PM, David Lord <davidism at gmail.com> wrote:
>
>> You restart the process running your app, which is uWSGI.  `master` does
>> not mean that, it means that you're starting a process that will manage
>> other processes.  Although there are solutions for restarting when files
>> change, you should always restart manually in production.
>>
>> On Tue, May 10, 2016 at 12:02 PM, Alex Hall <ahall at autodist.com> wrote:
>>
>>> Hi all,
>>> It just struck me that restarting a Flask app after modifying the Python
>>> code isn't obvious. Do I restart UWSGI, Nginx, or both? In UWSGI, I
>>> specified "master=true", which I read lets you apply changes without
>>> restarting. Therefore, do I need to restart anything, or simply save my
>>> changes to the code and watch it happen automatically?
>>>
>>> --
>>> Alex Hall
>>> Automatic Distributors, IT department
>>> ahall at autodist.com
>>>
>>> _______________________________________________
>>> Flask mailing list
>>> Flask at python.org
>>> https://mail.python.org/mailman/listinfo/flask
>>>
>>>
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
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From lormayna at gmail.com  Tue May 10 16:47:02 2016
From: lormayna at gmail.com (Lorenzo Mainardi)
Date: Tue, 10 May 2016 22:47:02 +0200
Subject: [Flask] Problem with Flask-Admin
In-Reply-To: <CAMonFrQJ5Y_P=ZZet=6Y0rY5n8dupiLL5_=r4Vnf7gqdA3qwtA@mail.gmail.com>
References: <CACLEbggQuOoqKo92cEAOrwFrbQzrJ_FCq00Wb+KyjmMHZry=sA@mail.gmail.com>
 <CAMonFrQnxDRnFVTL-4haCeRiVciq=iJ9n6cvcxLuRe-JaoCHUA@mail.gmail.com>
 <CACLEbgjV5-HzABFLZEoakgEmP5jRD=6-Rt2iKMjPaKAWzzJiGg@mail.gmail.com>
 <CABC5zqgZUAZzEZpUxtHa43+X4_rZA33+jHG6a9qt8K9_2SuF2Q@mail.gmail.com>
 <CACLEbgiFkdCspGEWUP7HOw9gW_nt8tU=OYuiD95HLmjCSMFgDA@mail.gmail.com>
 <CAMonFrQJ5Y_P=ZZet=6Y0rY5n8dupiLL5_=r4Vnf7gqdA3qwtA@mail.gmail.com>
Message-ID: <CACLEbggTRCD-WbqwtcRQxdtjwAC5K6q7BBMksPVqc8ogfQVbLw@mail.gmail.com>

Thank you, now it seems working fine.


2016-05-10 14:47 GMT+02:00 Andrea D'Amore <and.damore at gmail.com>:

> On 9 May 2016 at 22:06, Lorenzo Mainardi <lormayna at gmail.com> wrote:
> > You can find the code here:
> > https://bitbucket.org/lormayna/digi_task
>
> > This is print dir(models): ['__builtins__', '__doc__', '__file__',
> > '__name__', '__package__']
> > This is print models.__file__:
> > /home/lorenzo/projects/digitel_task/app/models.pyc
>
> I don't understand exactly what the issue is but I think it's a
> circular dependency one between app and models modules: app.py is
> importing from models.py that is importing from app.
> If you put print dir(models) just under "import models" in app.py you
> can see in the output that it's run twice, the first time the module
> has no attributes, and that's where you're getting the runtime error.
> The second time the models module is correctly showing the classes you
> defined, and that's the one you get if you try the code in an
> interactive interpreter and then try to manually execute
> admin.add_view() with models.Status, at that point models module is
> populated.
>
>
> --
> Andrea
>



-- 
LORENZO MAINARDI
http://blog.mainardi.me
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From ahall at autodist.com  Tue May 10 17:40:53 2016
From: ahall at autodist.com (Alex Hall)
Date: Tue, 10 May 2016 17:40:53 -0400
Subject: [Flask] Particular order for starting Nginx/UWSGI?
Message-ID: <CA+Q8_JeKJTSaY3Mwx2zaZdiL--0htAnf7kXGwjVATvfDBuW=Vw@mail.gmail.com>

Hi all,
I'm suddenly getting errors, where the socket used by Nginx and UWSGI isn't
reachable because of permission problems. This didn't happen until I
restarted both services (Nginx was acting up; I didn't restart it to try to
restart my app). Is there a specific order in which these pieces have to be
started or stopped to avoid problems, or is this something different? I
didn't change the socket details in any configuration file, so it almost
has to be the restarting of both services. Thanks.

-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Tue May 10 18:23:28 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Tue, 10 May 2016 17:23:28 -0500
Subject: [Flask] Particular order for starting Nginx/UWSGI?
In-Reply-To: <CA+Q8_JeKJTSaY3Mwx2zaZdiL--0htAnf7kXGwjVATvfDBuW=Vw@mail.gmail.com>
References: <CA+Q8_JeKJTSaY3Mwx2zaZdiL--0htAnf7kXGwjVATvfDBuW=Vw@mail.gmail.com>
Message-ID: <CABC5zqiYqU6wD0n=B+VzUnK29tHE0jYgTCMZ2TZqMjJ=-mhRtQ@mail.gmail.com>

As far as I know, only the uWSGI process creates the sockets. Are you using
unix sockets or network sockets?

Every time I've tried to get unix socks working, I've run into a
permissions issue, and I've never had enough time to figure it out. Perhaps
someone else on the list can point you in the right way.  Maybe you can try
chmoding to 777 and see if that helps.

I usually go for network sockets bound to 127.0.0.1 for security ("socket =
127.0.0.1:7000"). If you are using unix socks, you might also try the
chown-socket and chmod-socket commands and set to the user/group your web
server runs as (usually something like www or nginx) and a 660, 666, or 777.



Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Tue, May 10, 2016 at 4:40 PM, Alex Hall <ahall at autodist.com> wrote:

> Hi all,
> I'm suddenly getting errors, where the socket used by Nginx and UWSGI
> isn't reachable because of permission problems. This didn't happen until I
> restarted both services (Nginx was acting up; I didn't restart it to try to
> restart my app). Is there a specific order in which these pieces have to be
> started or stopped to avoid problems, or is this something different? I
> didn't change the socket details in any configuration file, so it almost
> has to be the restarting of both services. Thanks.
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ahall at autodist.com  Tue May 10 20:12:14 2016
From: ahall at autodist.com (Alex Hall)
Date: Tue, 10 May 2016 20:12:14 -0400
Subject: [Flask] Particular order for starting Nginx/UWSGI?
In-Reply-To: <CABC5zqiYqU6wD0n=B+VzUnK29tHE0jYgTCMZ2TZqMjJ=-mhRtQ@mail.gmail.com>
References: <CA+Q8_JeKJTSaY3Mwx2zaZdiL--0htAnf7kXGwjVATvfDBuW=Vw@mail.gmail.com>
 <CABC5zqiYqU6wD0n=B+VzUnK29tHE0jYgTCMZ2TZqMjJ=-mhRtQ@mail.gmail.com>
Message-ID: <13390471-2A6F-40E9-BDAF-55F75970C8AB@autodist.com>

Yep, you got me. Unix sockets, because I read they're faster, and because punching holes in the Google Cloud firewall is a pain/must be approved by my boss. :) Although, maybe it won't need holes if it's all based on localhost--that's a good thought. I'll switch over to HTTP sockets tomorrow and see if that makes a difference. Thanks.
> On May 10, 2016, at 18:23, Anthony Ford <ford.anthonyj at gmail.com> wrote:
> 
> As far as I know, only the uWSGI process creates the sockets. Are you using unix sockets or network sockets? 
> 
> Every time I've tried to get unix socks working, I've run into a permissions issue, and I've never had enough time to figure it out. Perhaps someone else on the list can point you in the right way.  Maybe you can try chmoding to 777 and see if that helps.
> 
> I usually go for network sockets bound to 127.0.0.1 for security ("socket = 127.0.0.1:7000 <http://127.0.0.1:7000/>"). If you are using unix socks, you might also try the chown-socket and chmod-socket commands and set to the user/group your web server runs as (usually something like www or nginx) and a 660, 666, or 777.
> 
> 
> 
> Anthony Ford,
> KF5IBN,
> ford.anthonyj at gmail.com <mailto:ford.anthonyj at gmail.com>
> On Tue, May 10, 2016 at 4:40 PM, Alex Hall <ahall at autodist.com <mailto:ahall at autodist.com>> wrote:
> Hi all,
> I'm suddenly getting errors, where the socket used by Nginx and UWSGI isn't reachable because of permission problems. This didn't happen until I restarted both services (Nginx was acting up; I didn't restart it to try to restart my app). Is there a specific order in which these pieces have to be started or stopped to avoid problems, or is this something different? I didn't change the socket details in any configuration file, so it almost has to be the restarting of both services. Thanks.
> 
> -- 
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com <mailto:ahall at autodist.com>
> 
> _______________________________________________
> Flask mailing list
> Flask at python.org <mailto:Flask at python.org>
> https://mail.python.org/mailman/listinfo/flask <https://mail.python.org/mailman/listinfo/flask>
> 
> 

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From ford.anthonyj at gmail.com  Tue May 10 20:16:41 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Tue, 10 May 2016 19:16:41 -0500
Subject: [Flask] Particular order for starting Nginx/UWSGI?
In-Reply-To: <13390471-2A6F-40E9-BDAF-55F75970C8AB@autodist.com>
References: <CA+Q8_JeKJTSaY3Mwx2zaZdiL--0htAnf7kXGwjVATvfDBuW=Vw@mail.gmail.com>
 <CABC5zqiYqU6wD0n=B+VzUnK29tHE0jYgTCMZ2TZqMjJ=-mhRtQ@mail.gmail.com>
 <13390471-2A6F-40E9-BDAF-55F75970C8AB@autodist.com>
Message-ID: <CABC5zqhFbFx8vO-MQmOkWAJrSXYsQcx1oVH7O0BOhfyUC0jPUw@mail.gmail.com>

Yeah, you shouldn't need to touch the firewall since it's entirely local
(IIRC that's caught at the kernel layer in most linuxes and routed without
ever really hitting the network stack or hw).

I'm sure there's a way to do it with unix socks. It's a standard (and
sometimes preferred) way of doing it. I've just never managed to get it
right.

With some effort, and perhaps some help from someone else on the
mailinglist, I'm sure you can get the unix socks working. And if you do,
let me know how!


Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Tue, May 10, 2016 at 7:12 PM, Alex Hall <ahall at autodist.com> wrote:

> Yep, you got me. Unix sockets, because I read they're faster, and because
> punching holes in the Google Cloud firewall is a pain/must be approved by
> my boss. :) Although, maybe it won't need holes if it's all based on
> localhost--that's a good thought. I'll switch over to HTTP sockets tomorrow
> and see if that makes a difference. Thanks.
>
> On May 10, 2016, at 18:23, Anthony Ford <ford.anthonyj at gmail.com> wrote:
>
> As far as I know, only the uWSGI process creates the sockets. Are you
> using unix sockets or network sockets?
>
> Every time I've tried to get unix socks working, I've run into a
> permissions issue, and I've never had enough time to figure it out. Perhaps
> someone else on the list can point you in the right way.  Maybe you can try
> chmoding to 777 and see if that helps.
>
> I usually go for network sockets bound to 127.0.0.1 for security ("socket
> = 127.0.0.1:7000"). If you are using unix socks, you might also try the
> chown-socket and chmod-socket commands and set to the user/group your web
> server runs as (usually something like www or nginx) and a 660, 666, or 777.
>
>
>
> Anthony Ford,
> KF5IBN,
> ford.anthonyj at gmail.com
>
> On Tue, May 10, 2016 at 4:40 PM, Alex Hall <ahall at autodist.com> wrote:
>
>> Hi all,
>> I'm suddenly getting errors, where the socket used by Nginx and UWSGI
>> isn't reachable because of permission problems. This didn't happen until I
>> restarted both services (Nginx was acting up; I didn't restart it to try to
>> restart my app). Is there a specific order in which these pieces have to be
>> started or stopped to avoid problems, or is this something different? I
>> didn't change the socket details in any configuration file, so it almost
>> has to be the restarting of both services. Thanks.
>>
>> --
>> Alex Hall
>> Automatic Distributors, IT department
>> ahall at autodist.com
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>
>
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From scott.massey at gmail.com  Tue May 10 20:58:36 2016
From: scott.massey at gmail.com (Scott Massey)
Date: Wed, 11 May 2016 09:58:36 +0900
Subject: [Flask] SQLAlchemy + pagination + MySQL problems
Message-ID: <CAO1c_xf4WSB0o_5QVQhOMY4=QH+UBkwKOf4TwBdjxA+sWWi22Q@mail.gmail.com>

I started getting this error when I switched from msqlite to MariaDB on a
digital ocean droplet. The syntax of how the ORM generates the query seems
to be the problem, but I don't know how to fix it. Changing the paginate
parameters such as 'per_page' only makes the params show as '-20, 20', for
example. See the error below:

sqlalchemy.exc.ProgrammingError

ProgrammingError: (pymysql.err.ProgrammingError) (1064, u"You have an error
in your SQL syntax; check the manual that corresponds to your MariaDB
server version for the right syntax to use near '-10, 10' at line 3")

[SQL: u'SELECT post.id AS post_id, post.title AS post_title, post.text AS
post_text, post.publish_date AS post_publish_date, post.user_id AS
post_user_id \nFROM post ORDER BY post.publish_date DESC \n LIMIT
%(param_1)s, %(param_2)s'] [parameters: {u'param_1': -10, u'param_2': 10}]

Here is the line that queries for posts:

@blog_blueprint.route('/')
@blog_blueprint.route('/<int:page>')
@cache.cached(timeout=60)
def home(page=1):
    posts = Post.query.order_by(Post.publish_date.desc()).paginate(page, 10)
    recent, top_tags = sidebar_data()

    return render_template(
    'home.html',
    posts=posts,
    recent=recent,
    top_tags=top_tags
    )

This first query fails with that same error, the second works via CLI, so
this seems to be what flask is sending to MySQL:

MariaDB [flaskblog]> SELECT post.id AS post_id, post.title AS post_title,
post.text AS post_text, post.publish_date AS post_publish_date, post.user_id
AS post_user_id \n FROM post ORDER BY post.publish_date DESC LIMIT -10, 10;

MariaDB [flaskblog]> SELECT post.id AS post_id, post.title AS post_title,
post.text AS post_text, post.publish_date AS post_publish_date, post.user_id
AS post_user_id \n FROM post ORDER BY post.publish_date DESC LIMIT 0, 10;

I am about to just take pagination out, because it's my first flask project
and it's just a blog, but I have spent hours banging my head. Thanks!

Scott
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From and.damore at gmail.com  Wed May 11 01:45:42 2016
From: and.damore at gmail.com (Andrea D'Amore)
Date: Wed, 11 May 2016 07:45:42 +0200
Subject: [Flask] Problem with Flask-Admin
In-Reply-To: <CACLEbggTRCD-WbqwtcRQxdtjwAC5K6q7BBMksPVqc8ogfQVbLw@mail.gmail.com>
References: <CACLEbggQuOoqKo92cEAOrwFrbQzrJ_FCq00Wb+KyjmMHZry=sA@mail.gmail.com>
 <CAMonFrQnxDRnFVTL-4haCeRiVciq=iJ9n6cvcxLuRe-JaoCHUA@mail.gmail.com>
 <CACLEbgjV5-HzABFLZEoakgEmP5jRD=6-Rt2iKMjPaKAWzzJiGg@mail.gmail.com>
 <CABC5zqgZUAZzEZpUxtHa43+X4_rZA33+jHG6a9qt8K9_2SuF2Q@mail.gmail.com>
 <CACLEbgiFkdCspGEWUP7HOw9gW_nt8tU=OYuiD95HLmjCSMFgDA@mail.gmail.com>
 <CAMonFrQJ5Y_P=ZZet=6Y0rY5n8dupiLL5_=r4Vnf7gqdA3qwtA@mail.gmail.com>
 <CACLEbggTRCD-WbqwtcRQxdtjwAC5K6q7BBMksPVqc8ogfQVbLw@mail.gmail.com>
Message-ID: <CAMonFrQUSMMK+72KJjjqkt0YVSZk0bxf0Yx2Tu4mnHB5x0g-UA@mail.gmail.com>

On 10 May 2016 at 22:47, Lorenzo Mainardi <lormayna at gmail.com> wrote:
> Thank you, now it seems working fine.

Well, don't keep us hanging, tell the list how did you manage to solve
the problem.

I later tried to reduce the issue -see SSCCE [1] , it's a _very_
insightful process for issue you don't see at first glance- and just
to clarify the circularity of your issue here's an example made of two
files, main.py and secondary.py


    # FILE main.py
    import secondary

    class Foo:
        message = "I'm Foo"

    print(secondary.__file__)
    print(dir(secondary))

    # trying the following line in interactive intepreter will throw
an exception
    #b = secondary.Bar()



    # FILE secondary.py
    from main import Foo

    class Bar(Foo):
        message = "I'm Bar"


Running main from command line will result in the same behavior.


[1] http://sscce.org/

-- 
Andrea

From and.damore at gmail.com  Wed May 11 02:04:17 2016
From: and.damore at gmail.com (Andrea D'Amore)
Date: Wed, 11 May 2016 08:04:17 +0200
Subject: [Flask] SQLAlchemy + pagination + MySQL problems
In-Reply-To: <CAO1c_xf4WSB0o_5QVQhOMY4=QH+UBkwKOf4TwBdjxA+sWWi22Q@mail.gmail.com>
References: <CAO1c_xf4WSB0o_5QVQhOMY4=QH+UBkwKOf4TwBdjxA+sWWi22Q@mail.gmail.com>
Message-ID: <CAMonFrTDrc9nMnRk9UZE0rJ1b2F+ZrXQ0V6g1ofbnSnxn1UoWQ@mail.gmail.com>

On 11 May 2016 at 02:58, Scott Massey <scott.massey at gmail.com> wrote:
> [parameters: {u'param_1': -10, u'param_2': 10}]

> AS post_user_id \n FROM post ORDER BY post.publish_date DESC LIMIT -10, 10;

I see why the DBMS is annoyed at that -10. This is likely
Flask-SQLAlchemy specific, can you provide a minimal example?
I figure that inspecting a bit the Paginate instance would give you
some answer, and flask-sqlalchemy is a thin layer IIRC so shouldn't be
too hard to look around.


-- 
Andrea

From ahall at autodist.com  Wed May 11 09:22:01 2016
From: ahall at autodist.com (Alex Hall)
Date: Wed, 11 May 2016 09:22:01 -0400
Subject: [Flask] "could not build URL for endpoint"?
Message-ID: <CA+Q8_JdAMVNaMNcFmdRsgwTmnACaDmLdo2PMWT4_W3ULazwNoQ@mail.gmail.com>

Hello list,
I have no idea what I changed--I've been messing with so many config files
and apps lately--but suddenly I'm getting that error when I load my app. My
templates use the 'url_for' function, as I'm told they should, but that
seems to be failing for some reason. The only related change I can think of
is that I recently added a couple more decorators to a view function, in an
effort to always direct to a certain view when visitors go to the main
site. That is
myapp.mysite.com/search
is redirected to by
myapp.mysite.com
or
myapp.mysite.com/index

The error is "could not build URL for endpoint '/index'. Did you mean
'/search' instead?

In my base template, I define a navigation bar. In the exception, the first
url in that bar is causing the problem:
a href="{{url_for("/index")}}">Home</a

Might the problem be that I'm defining a link (/index) that will render as
this view, because that's a decorator before the /search function? That
doesn't make much sense to me, but I can't think what else it could be.
Related: is there a better way of directing to a certain view than putting
a bunch of app.route decorators in front of a single function? Is the
recommended way to handle this in the web server configuration instead?


-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Wed May 11 09:32:45 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Wed, 11 May 2016 08:32:45 -0500
Subject: [Flask] "could not build URL for endpoint"?
In-Reply-To: <CA+Q8_JdAMVNaMNcFmdRsgwTmnACaDmLdo2PMWT4_W3ULazwNoQ@mail.gmail.com>
References: <CA+Q8_JdAMVNaMNcFmdRsgwTmnACaDmLdo2PMWT4_W3ULazwNoQ@mail.gmail.com>
Message-ID: <CABC5zqhZjGKCP5itSOBWjTZUOc35Bo39E=9Ht-jfJDZnCv1yMw@mail.gmail.com>

Your running into an uissue in that url_for doesn't take the path ( the
"/foo/bar" in "example.com/foo/bar") but the function which provides the
view you want.

If you define a route (say "/index"), and the function that handles that
route is foobar(), then you would use url_for('foobar').

So for:

@app.route('/index')
def foobar():
    return render_template('foobar.html')


your template would have the following link:

a href="{{url_for('.foobar')}}">Home</a


Hope that helps!

Also, be careful with your quotes. While Jinja should pick up the quotes
within {{}} and handle them well, even with the outer quotes, it's good to
be in the habit of not mixing quotes. Use one type (i.e. double) for your
outer, and the other (single) for your inner. Since Python doesn't
differentiate between the types, it's safe to swap them as you desire.



Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Wed, May 11, 2016 at 8:22 AM, Alex Hall <ahall at autodist.com> wrote:

> Hello list,
> I have no idea what I changed--I've been messing with so many config files
> and apps lately--but suddenly I'm getting that error when I load my app. My
> templates use the 'url_for' function, as I'm told they should, but that
> seems to be failing for some reason. The only related change I can think of
> is that I recently added a couple more decorators to a view function, in an
> effort to always direct to a certain view when visitors go to the main
> site. That is
> myapp.mysite.com/search
> is redirected to by
> myapp.mysite.com
> or
> myapp.mysite.com/index
>
> The error is "could not build URL for endpoint '/index'. Did you mean
> '/search' instead?
>
> In my base template, I define a navigation bar. In the exception, the
> first url in that bar is causing the problem:
> a href="{{url_for("/index")}}">Home</a
>
> Might the problem be that I'm defining a link (/index) that will render as
> this view, because that's a decorator before the /search function? That
> doesn't make much sense to me, but I can't think what else it could be.
> Related: is there a better way of directing to a certain view than putting
> a bunch of app.route decorators in front of a single function? Is the
> recommended way to handle this in the web server configuration instead?
>
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ford.anthonyj at gmail.com  Wed May 11 09:35:25 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Wed, 11 May 2016 08:35:25 -0500
Subject: [Flask] "could not build URL for endpoint"?
In-Reply-To: <CABC5zqhZjGKCP5itSOBWjTZUOc35Bo39E=9Ht-jfJDZnCv1yMw@mail.gmail.com>
References: <CA+Q8_JdAMVNaMNcFmdRsgwTmnACaDmLdo2PMWT4_W3ULazwNoQ@mail.gmail.com>
 <CABC5zqhZjGKCP5itSOBWjTZUOc35Bo39E=9Ht-jfJDZnCv1yMw@mail.gmail.com>
Message-ID: <CABC5zqgL1pEAQ4cV3TwDS7Z7KDB5BWmF7sXHdf9gmr0Q+CRaLA@mail.gmail.com>

Forgot to give you these links on url_for:

http://flask.pocoo.org/docs/0.10/api/#flask.url_for

http://flask.pocoo.org/docs/0.10/blueprints/#building-urls


Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Wed, May 11, 2016 at 8:32 AM, Anthony Ford <ford.anthonyj at gmail.com>
wrote:

> Your running into an uissue in that url_for doesn't take the path ( the
> "/foo/bar" in "example.com/foo/bar") but the function which provides the
> view you want.
>
> If you define a route (say "/index"), and the function that handles that
> route is foobar(), then you would use url_for('foobar').
>
> So for:
>
> @app.route('/index')
> def foobar():
>     return render_template('foobar.html')
>
>
> your template would have the following link:
>
> a href="{{url_for('.foobar')}}">Home</a
>
>
> Hope that helps!
>
> Also, be careful with your quotes. While Jinja should pick up the quotes
> within {{}} and handle them well, even with the outer quotes, it's good to
> be in the habit of not mixing quotes. Use one type (i.e. double) for your
> outer, and the other (single) for your inner. Since Python doesn't
> differentiate between the types, it's safe to swap them as you desire.
>
>
>
> Anthony Ford,
> KF5IBN,
> ford.anthonyj at gmail.com
>
> On Wed, May 11, 2016 at 8:22 AM, Alex Hall <ahall at autodist.com> wrote:
>
>> Hello list,
>> I have no idea what I changed--I've been messing with so many config
>> files and apps lately--but suddenly I'm getting that error when I load my
>> app. My templates use the 'url_for' function, as I'm told they should, but
>> that seems to be failing for some reason. The only related change I can
>> think of is that I recently added a couple more decorators to a view
>> function, in an effort to always direct to a certain view when visitors go
>> to the main site. That is
>> myapp.mysite.com/search
>> is redirected to by
>> myapp.mysite.com
>> or
>> myapp.mysite.com/index
>>
>> The error is "could not build URL for endpoint '/index'. Did you mean
>> '/search' instead?
>>
>> In my base template, I define a navigation bar. In the exception, the
>> first url in that bar is causing the problem:
>> a href="{{url_for("/index")}}">Home</a
>>
>> Might the problem be that I'm defining a link (/index) that will render
>> as this view, because that's a decorator before the /search function? That
>> doesn't make much sense to me, but I can't think what else it could be.
>> Related: is there a better way of directing to a certain view than putting
>> a bunch of app.route decorators in front of a single function? Is the
>> recommended way to handle this in the web server configuration instead?
>>
>>
>> --
>> Alex Hall
>> Automatic Distributors, IT department
>> ahall at autodist.com
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>
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From ahall at autodist.com  Wed May 11 09:36:55 2016
From: ahall at autodist.com (Alex Hall)
Date: Wed, 11 May 2016 09:36:55 -0400
Subject: [Flask] "could not build URL for endpoint"?
In-Reply-To: <CABC5zqhZjGKCP5itSOBWjTZUOc35Bo39E=9Ht-jfJDZnCv1yMw@mail.gmail.com>
References: <CA+Q8_JdAMVNaMNcFmdRsgwTmnACaDmLdo2PMWT4_W3ULazwNoQ@mail.gmail.com>
 <CABC5zqhZjGKCP5itSOBWjTZUOc35Bo39E=9Ht-jfJDZnCv1yMw@mail.gmail.com>
Message-ID: <CA+Q8_Jfg+iLHfa6YxPTxynj2Mu3tpNYqcqiPysjnoW7r_3UfDw@mail.gmail.com>

Okay, thanks--that explains a lot! I had a function called 'index', but
moved my decorators for / and /index off of it. I didn't realize url_for
worked that way, so I was calling a function that had no app.route
decorators. This explains so much.

Your example said to use url_for('.foobar')}}. Was the period supposed to
be before the function name, or was that a typo? Just want to make sure
there's not some other aspect I'm missing. Thanks.

On Wed, May 11, 2016 at 9:32 AM, Anthony Ford <ford.anthonyj at gmail.com>
wrote:

> Your running into an uissue in that url_for doesn't take the path ( the
> "/foo/bar" in "example.com/foo/bar") but the function which provides the
> view you want.
>
> If you define a route (say "/index"), and the function that handles that
> route is foobar(), then you would use url_for('foobar').
>
> So for:
>
> @app.route('/index')
> def foobar():
>     return render_template('foobar.html')
>
>
> your template would have the following link:
>
> a href="{{url_for('.foobar')}}">Home</a
>
>
> Hope that helps!
>
> Also, be careful with your quotes. While Jinja should pick up the quotes
> within {{}} and handle them well, even with the outer quotes, it's good to
> be in the habit of not mixing quotes. Use one type (i.e. double) for your
> outer, and the other (single) for your inner. Since Python doesn't
> differentiate between the types, it's safe to swap them as you desire.
>
>
>
> Anthony Ford,
> KF5IBN,
> ford.anthonyj at gmail.com
>
> On Wed, May 11, 2016 at 8:22 AM, Alex Hall <ahall at autodist.com> wrote:
>
>> Hello list,
>> I have no idea what I changed--I've been messing with so many config
>> files and apps lately--but suddenly I'm getting that error when I load my
>> app. My templates use the 'url_for' function, as I'm told they should, but
>> that seems to be failing for some reason. The only related change I can
>> think of is that I recently added a couple more decorators to a view
>> function, in an effort to always direct to a certain view when visitors go
>> to the main site. That is
>> myapp.mysite.com/search
>> is redirected to by
>> myapp.mysite.com
>> or
>> myapp.mysite.com/index
>>
>> The error is "could not build URL for endpoint '/index'. Did you mean
>> '/search' instead?
>>
>> In my base template, I define a navigation bar. In the exception, the
>> first url in that bar is causing the problem:
>> a href="{{url_for("/index")}}">Home</a
>>
>> Might the problem be that I'm defining a link (/index) that will render
>> as this view, because that's a decorator before the /search function? That
>> doesn't make much sense to me, but I can't think what else it could be.
>> Related: is there a better way of directing to a certain view than putting
>> a bunch of app.route decorators in front of a single function? Is the
>> recommended way to handle this in the web server configuration instead?
>>
>>
>> --
>> Alex Hall
>> Automatic Distributors, IT department
>> ahall at autodist.com
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>


-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Wed May 11 09:43:40 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Wed, 11 May 2016 08:43:40 -0500
Subject: [Flask] "could not build URL for endpoint"?
In-Reply-To: <CA+Q8_Jfg+iLHfa6YxPTxynj2Mu3tpNYqcqiPysjnoW7r_3UfDw@mail.gmail.com>
References: <CA+Q8_JdAMVNaMNcFmdRsgwTmnACaDmLdo2PMWT4_W3ULazwNoQ@mail.gmail.com>
 <CABC5zqhZjGKCP5itSOBWjTZUOc35Bo39E=9Ht-jfJDZnCv1yMw@mail.gmail.com>
 <CA+Q8_Jfg+iLHfa6YxPTxynj2Mu3tpNYqcqiPysjnoW7r_3UfDw@mail.gmail.com>
Message-ID: <CABC5zqjeANzex4azRmgkGQSwFu9GcXusxNdR2VScA-WUJeTW3w@mail.gmail.com>

If you're not using blueprints, leave it off (see
http://flask.pocoo.org/docs/0.10/blueprints/#building-urls).

I'm not sure if it will cause problems if you aren't using blueprints, or
if it will just ignore it.

In a blueprint, it tells werkzueg to use the current blueprint as the
source of handler functions, instead of the global pool. If you don't use
the leading period and have a function name crash (i.e. index in your admin
blueprint and index in your public blueprint), it won't know which one to
use (or may choose incorrectly). You can also specify blueprints if you
need to reach across blueprints (i.e. have a link to the login page within
your admin blueprint) , by specifying the blueprint name (say
"admin.login").


Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Wed, May 11, 2016 at 8:36 AM, Alex Hall <ahall at autodist.com> wrote:

> Okay, thanks--that explains a lot! I had a function called 'index', but
> moved my decorators for / and /index off of it. I didn't realize url_for
> worked that way, so I was calling a function that had no app.route
> decorators. This explains so much.
>
> Your example said to use url_for('.foobar')}}. Was the period supposed to
> be before the function name, or was that a typo? Just want to make sure
> there's not some other aspect I'm missing. Thanks.
>
> On Wed, May 11, 2016 at 9:32 AM, Anthony Ford <ford.anthonyj at gmail.com>
> wrote:
>
>> Your running into an uissue in that url_for doesn't take the path ( the
>> "/foo/bar" in "example.com/foo/bar") but the function which provides the
>> view you want.
>>
>> If you define a route (say "/index"), and the function that handles that
>> route is foobar(), then you would use url_for('foobar').
>>
>> So for:
>>
>> @app.route('/index')
>> def foobar():
>>     return render_template('foobar.html')
>>
>>
>> your template would have the following link:
>>
>> a href="{{url_for('.foobar')}}">Home</a
>>
>>
>> Hope that helps!
>>
>> Also, be careful with your quotes. While Jinja should pick up the quotes
>> within {{}} and handle them well, even with the outer quotes, it's good to
>> be in the habit of not mixing quotes. Use one type (i.e. double) for your
>> outer, and the other (single) for your inner. Since Python doesn't
>> differentiate between the types, it's safe to swap them as you desire.
>>
>>
>>
>> Anthony Ford,
>> KF5IBN,
>> ford.anthonyj at gmail.com
>>
>> On Wed, May 11, 2016 at 8:22 AM, Alex Hall <ahall at autodist.com> wrote:
>>
>>> Hello list,
>>> I have no idea what I changed--I've been messing with so many config
>>> files and apps lately--but suddenly I'm getting that error when I load my
>>> app. My templates use the 'url_for' function, as I'm told they should, but
>>> that seems to be failing for some reason. The only related change I can
>>> think of is that I recently added a couple more decorators to a view
>>> function, in an effort to always direct to a certain view when visitors go
>>> to the main site. That is
>>> myapp.mysite.com/search
>>> is redirected to by
>>> myapp.mysite.com
>>> or
>>> myapp.mysite.com/index
>>>
>>> The error is "could not build URL for endpoint '/index'. Did you mean
>>> '/search' instead?
>>>
>>> In my base template, I define a navigation bar. In the exception, the
>>> first url in that bar is causing the problem:
>>> a href="{{url_for("/index")}}">Home</a
>>>
>>> Might the problem be that I'm defining a link (/index) that will render
>>> as this view, because that's a decorator before the /search function? That
>>> doesn't make much sense to me, but I can't think what else it could be.
>>> Related: is there a better way of directing to a certain view than putting
>>> a bunch of app.route decorators in front of a single function? Is the
>>> recommended way to handle this in the web server configuration instead?
>>>
>>>
>>> --
>>> Alex Hall
>>> Automatic Distributors, IT department
>>> ahall at autodist.com
>>>
>>> _______________________________________________
>>> Flask mailing list
>>> Flask at python.org
>>> https://mail.python.org/mailman/listinfo/flask
>>>
>>>
>>
>
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
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From 451517996 at qq.com  Thu May 12 01:45:36 2016
From: 451517996 at qq.com (=?gb18030?B?zuLD+g==?=)
Date: Thu, 12 May 2016 13:45:36 +0800
Subject: [Flask] a open source twitter
Message-ID: <tencent_57386AA510CA59C92FE88A88@qq.com>

http://abelkhan.com
build a open source twitter by flask


now it is a demo


reception every one join my repository


btw github:https://github.com/qianqians/abelkhan.git
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From jwheeler1 at gmail.com  Thu May 12 11:11:52 2016
From: jwheeler1 at gmail.com (John Wheeler)
Date: Thu, 12 May 2016 08:11:52 -0700
Subject: [Flask] Flask-Ask a Flask Extension for Writing Amazon Echo Apps
 with Alexa Skills Kit
Message-ID: <CAGrcPfVnmEp9vqu0nYKoyz5cDgCN9zr3iioDu3RrU5yf92u7_Q@mail.gmail.com>

Hello everybody out there,

I've been working on a Flask extension, called Flask-Ask, for programming
Alexa skills on the Amazon Echo. I've been working on this for a few weeks
now and have a release pushed up to pypi, samples, and documentation.

The Alexa service is based on its own request / response model that uses
JSON over HTTP. I made Flask-Ask's API similar to Flask's in that regard
with routing / parameter mapping, context locals, and integration with
Flask's template system.

The code and samples are available at

https://github.com/johnwheeler/flask-ask

The documentation is here

http://flask-ask.readthedocs.io/en/latest/

I'd like to know what people think of the API and what features they want.
I'm working on a tutorial that shows how to rapidly develop skills with
Flask-Ask and ngrok.io, and I'm available for a Google Hangout if you want
to try and need help in the interim.

John
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From david at davidbaumgold.com  Thu May 12 11:29:45 2016
From: david at davidbaumgold.com (David Baumgold)
Date: Thu, 12 May 2016 11:29:45 -0400
Subject: [Flask] Flask-Ask a Flask Extension for Writing Amazon Echo
 Apps with Alexa Skills Kit
In-Reply-To: <CAGrcPfVnmEp9vqu0nYKoyz5cDgCN9zr3iioDu3RrU5yf92u7_Q@mail.gmail.com>
References: <CAGrcPfVnmEp9vqu0nYKoyz5cDgCN9zr3iioDu3RrU5yf92u7_Q@mail.gmail.com>
Message-ID: <etPan.5734a169.c7d50d8.1580e@mammoth.local>

Hey John, this looks nifty! However, I have a few comments for how it can be improved:

* You should use the ?cryptography? module instead of PyOpenSSL:?https://cryptography.io
* None of your classes or methods have docstrings! I suggest writing docstrings, and using Sphinx?s autodoc extension to render those docstrings in your documentation:?http://www.sphinx-doc.org/en/stable/ext/autodoc.html?
* What if I don?t want to use YAML? I suggest removing that dependency, and exposing an API to fetch a template. That way, the developer can put multiple templates in one YAML file the way you have it set up, but it?s not required, and if the developer doesn?t use YAML then it won?t be pulled in as a dependency.
* ASK_VERIFY_TIMESTAMP is set to False by default, but it?s generally good practice to make code secure by default. That way, a developer can intentionally and knowingly change the defaults to be insecure for development purposes, but is less likely to leave them insecure in production.
* Rather than setting a default ASK_ROUTE setting, why not construct this as a Flask Blueprint, so the developer can attach it to whatever URL he/she wants?

Let me know if you?d like me to clarify some of these points. In spite of my comments, I think this is a really nifty idea, and I might want to try using it sometime!

David Baumgold

On May 12, 2016 at 11:12:41 AM, John Wheeler (jwheeler1 at gmail.com) wrote:

Hello everybody out there,

I've been working on a Flask extension, called Flask-Ask, for programming Alexa skills on the Amazon Echo. I've been working on this for a few weeks now and have a release pushed up to pypi, samples, and documentation.

The Alexa service is based on its own request / response model that uses JSON over HTTP. I made Flask-Ask's API similar to Flask's in that regard with routing / parameter mapping, context locals, and integration with Flask's template system.

The code and samples are available at

https://github.com/johnwheeler/flask-ask

The documentation is here

http://flask-ask.readthedocs.io/en/latest/

I'd like to know what people think of the API and what features they want. I'm working on a tutorial that shows how to rapidly develop skills with Flask-Ask and ngrok.io, and I'm available for a Google Hangout if you want to try and need help in the interim.

John
_______________________________________________  
Flask mailing list  
Flask at python.org  
https://mail.python.org/mailman/listinfo/flask  
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From david at davidbaumgold.com  Thu May 12 11:35:16 2016
From: david at davidbaumgold.com (David Baumgold)
Date: Thu, 12 May 2016 11:35:16 -0400
Subject: [Flask] Flask-Ask a Flask Extension for Writing Amazon Echo
 Apps with Alexa Skills Kit
In-Reply-To: <etPan.5734a169.c7d50d8.1580e@mammoth.local>
References: <CAGrcPfVnmEp9vqu0nYKoyz5cDgCN9zr3iioDu3RrU5yf92u7_Q@mail.gmail.com>
 <etPan.5734a169.c7d50d8.1580e@mammoth.local>
Message-ID: <etPan.5734a2b4.626d550d.1580e@mammoth.local>

Oh, one more very important thing: where are the automated tests?!

On May 12, 2016 at 11:29:49 AM, David Baumgold (david at davidbaumgold.com) wrote:

Hey John, this looks nifty! However, I have a few comments for how it can be improved:

* You should use the ?cryptography? module instead of PyOpenSSL:?https://cryptography.io
* None of your classes or methods have docstrings! I suggest writing docstrings, and using Sphinx?s autodoc extension to render those docstrings in your documentation:?http://www.sphinx-doc.org/en/stable/ext/autodoc.html?
* What if I don?t want to use YAML? I suggest removing that dependency, and exposing an API to fetch a template. That way, the developer can put multiple templates in one YAML file the way you have it set up, but it?s not required, and if the developer doesn?t use YAML then it won?t be pulled in as a dependency.
* ASK_VERIFY_TIMESTAMP is set to False by default, but it?s generally good practice to make code secure by default. That way, a developer can intentionally and knowingly change the defaults to be insecure for development purposes, but is less likely to leave them insecure in production.
* Rather than setting a default ASK_ROUTE setting, why not construct this as a Flask Blueprint, so the developer can attach it to whatever URL he/she wants?

Let me know if you?d like me to clarify some of these points. In spite of my comments, I think this is a really nifty idea, and I might want to try using it sometime!

David Baumgold

On May 12, 2016 at 11:12:41 AM, John Wheeler (jwheeler1 at gmail.com) wrote:

Hello everybody out there,

I've been working on a Flask extension, called Flask-Ask, for programming Alexa skills on the Amazon Echo. I've been working on this for a few weeks now and have a release pushed up to pypi, samples, and documentation.

The Alexa service is based on its own request / response model that uses JSON over HTTP. I made Flask-Ask's API similar to Flask's in that regard with routing / parameter mapping, context locals, and integration with Flask's template system.

The code and samples are available at

https://github.com/johnwheeler/flask-ask

The documentation is here

http://flask-ask.readthedocs.io/en/latest/

I'd like to know what people think of the API and what features they want. I'm working on a tutorial that shows how to rapidly develop skills with Flask-Ask and ngrok.io, and I'm available for a Google Hangout if you want to try and need help in the interim.

John
_______________________________________________
Flask mailing list
Flask at python.org
https://mail.python.org/mailman/listinfo/flask
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From jwheeler1 at gmail.com  Thu May 12 13:29:07 2016
From: jwheeler1 at gmail.com (John Wheeler)
Date: Thu, 12 May 2016 10:29:07 -0700
Subject: [Flask] Flask-Ask a Flask Extension for Writing Amazon Echo
 Apps with Alexa Skills Kit
In-Reply-To: <etPan.5734a2b4.626d550d.1580e@mammoth.local>
References: <CAGrcPfVnmEp9vqu0nYKoyz5cDgCN9zr3iioDu3RrU5yf92u7_Q@mail.gmail.com>
 <etPan.5734a169.c7d50d8.1580e@mammoth.local>
 <etPan.5734a2b4.626d550d.1580e@mammoth.local>
Message-ID: <CAGrcPfVS48VkJgBPUe7d501Jz5wbhpqkP44p7WFk2btxkokXfg@mail.gmail.com>

David,

Whoa! Thank you man! We're on the same page with a lot of these. I'm going
to check out the cryptography module. I hadn't heard of it, but I want to
see it.

The docstrings / autodoc are a priority. This is my first time using
Sphinx, and I prioritized shipping *something* with minimal docs, but now
I'm switching gears and working on a tutorial / more comprehensive docs.

If was pulling the library down, and I saw the PyYAML dependency, it would
cause me to pause. What's important to me now is showcasing the feature of
grouping templates in a single file vs per file templates. At first, I
started rolling my own system sort of based on Lektor content files but
then decided to grab YAML off the shelf because I couldn't think of any
hard reasons aside from the dependency not to. But I don't like the
dependency and also want to work toward removing it.

For the timestamp verification, your clock needs to sync with the NTP, so I
did this to lower barriers to entry. The security concern didn't escape me
either though. What would your thoughts be on turning timestamp (any, all)
verification off when app.debug = True?

I'll investigate blueprints further--I have not looked at them much. Other
APIs that reserve a default URL put an underscore in front to mitigate
against clobbering. A lot of Google App Engine APIs work like that. I don't
think it's ideal, but don't know if shifting over to a blueprint is worth
it. Excuse my ignorance on blueprints for the time-being.

Where are those tests, David? :-) In all seriousness, they are something
that I need and want to do, but have back burnered for now in favor
developing against the samples (which have been ported from the official
Amazon Java skills kit).

Thank you again David, hope to hear more from you.

On Thu, May 12, 2016 at 8:35 AM, David Baumgold <david at davidbaumgold.com>
wrote:

> Oh, one more very important thing: where are the automated tests?!
>
> On May 12, 2016 at 11:29:49 AM, David Baumgold (david at davidbaumgold.com)
> wrote:
>
> Hey John, this looks nifty! However, I have a few comments for how it can
> be improved:
>
> * You should use the ?cryptography? module instead of PyOpenSSL:
> https://cryptography.io
> * None of your classes or methods have docstrings! I suggest writing
> docstrings, and using Sphinx?s autodoc extension to render those docstrings
> in your documentation:
> http://www.sphinx-doc.org/en/stable/ext/autodoc.html
> * What if I don?t want to use YAML? I suggest removing that dependency,
> and exposing an API to fetch a template. That way, the developer can put
> multiple templates in one YAML file the way you have it set up, but it?s
> not required, and if the developer doesn?t use YAML then it won?t be pulled
> in as a dependency.
> * ASK_VERIFY_TIMESTAMP is set to False by default, but it?s generally good
> practice to make code secure by default. That way, a developer can
> intentionally and knowingly change the defaults to be insecure for
> development purposes, but is less likely to leave them insecure in
> production.
> * Rather than setting a default ASK_ROUTE setting, why not construct this
> as a Flask Blueprint, so the developer can attach it to whatever URL he/she
> wants?
>
> Let me know if you?d like me to clarify some of these points. In spite of
> my comments, I think this is a really nifty idea, and I might want to try
> using it sometime!
>
> David Baumgold
>
> On May 12, 2016 at 11:12:41 AM, John Wheeler (jwheeler1 at gmail.com) wrote:
>
> Hello everybody out there,
>
> I've been working on a Flask extension, called Flask-Ask, for programming
> Alexa skills on the Amazon Echo. I've been working on this for a few weeks
> now and have a release pushed up to pypi, samples, and documentation.
>
> The Alexa service is based on its own request / response model that uses
> JSON over HTTP. I made Flask-Ask's API similar to Flask's in that regard
> with routing / parameter mapping, context locals, and integration with
> Flask's template system.
>
> The code and samples are available at
>
> https://github.com/johnwheeler/flask-ask
>
> The documentation is here
>
> http://flask-ask.readthedocs.io/en/latest/
>
> I'd like to know what people think of the API and what features they want.
> I'm working on a tutorial that shows how to rapidly develop skills with
> Flask-Ask and ngrok.io, and I'm available for a Google Hangout if you
> want to try and need help in the interim.
>
> John
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From jwheeler1 at gmail.com  Thu May 12 12:26:50 2016
From: jwheeler1 at gmail.com (John Wheeler)
Date: Thu, 12 May 2016 09:26:50 -0700
Subject: [Flask] Flask-Ask a Flask Extension for Writing Amazon Echo
 Apps with Alexa Skills Kit
In-Reply-To: <etPan.5734a2b4.626d550d.1580e@mammoth.local>
References: <CAGrcPfVnmEp9vqu0nYKoyz5cDgCN9zr3iioDu3RrU5yf92u7_Q@mail.gmail.com>
 <etPan.5734a169.c7d50d8.1580e@mammoth.local>
 <etPan.5734a2b4.626d550d.1580e@mammoth.local>
Message-ID: <CAGrcPfWYBoLb6=VgB6a3b3TMCvYVpU3HwDMAqFjand+BsACE0g@mail.gmail.com>

David,

Whoa! Thank you man! We're on the same page with a lot of these. I'm going
to check out the cryptography module. I hadn't heard of it, but I want to
see it.

The docstrings / autodoc are a priority. This is my first time using
Sphinx, and I prioritized shipping *something* with minimal docs, but now
I'm switching gears and working on a tutorial / more comprehensive docs.

If was pulling the library down, and I saw the PyYAML dependency, it would
cause me to pause. What's important to me now is showcasing the feature of
grouping templates in a single file vs per file templates. At first, I
started rolling my own system sort of based on Lektor content files but
then decided to grab YAML off the shelf because I couldn't think of any
hard reasons aside from the dependency not to. But I don't like the
dependency and also want to work toward removing it.

For the timestamp verification, your clock needs to sync with the NTP, so I
did this to lower barriers to entry. The security concern didn't escape me
either though. What would your thoughts be on turning timestamp (any, all)
verification off when app.debug = True?

I'll investigate blueprints further--I have not looked at them much. Other
APIs that reserve a default URL put an underscore in front to mitigate
against clobbering. A lot of Google App Engine APIs work like that. I don't
think it's ideal, but don't know if shifting over to a blueprint is worth
it. Excuse my ignorance on blueprints for the time-being.

Where are those tests, David? :-) In all seriousness, they are something
that I need and want to do, but have back burnered for now in favor
developing against the samples (which have been ported from the official
Amazon Java skills kit).

Thank you again David, hope to hear more from you.

John

On Thu, May 12, 2016 at 8:35 AM, David Baumgold <david at davidbaumgold.com>
wrote:

> Oh, one more very important thing: where are the automated tests?!
>
> On May 12, 2016 at 11:29:49 AM, David Baumgold (david at davidbaumgold.com)
> wrote:
>
> Hey John, this looks nifty! However, I have a few comments for how it can
> be improved:
>
> * You should use the ?cryptography? module instead of PyOpenSSL:
> https://cryptography.io
> * None of your classes or methods have docstrings! I suggest writing
> docstrings, and using Sphinx?s autodoc extension to render those docstrings
> in your documentation:
> http://www.sphinx-doc.org/en/stable/ext/autodoc.html
> * What if I don?t want to use YAML? I suggest removing that dependency,
> and exposing an API to fetch a template. That way, the developer can put
> multiple templates in one YAML file the way you have it set up, but it?s
> not required, and if the developer doesn?t use YAML then it won?t be pulled
> in as a dependency.
> * ASK_VERIFY_TIMESTAMP is set to False by default, but it?s generally good
> practice to make code secure by default. That way, a developer can
> intentionally and knowingly change the defaults to be insecure for
> development purposes, but is less likely to leave them insecure in
> production.
> * Rather than setting a default ASK_ROUTE setting, why not construct this
> as a Flask Blueprint, so the developer can attach it to whatever URL he/she
> wants?
>
> Let me know if you?d like me to clarify some of these points. In spite of
> my comments, I think this is a really nifty idea, and I might want to try
> using it sometime!
>
> David Baumgold
>
> On May 12, 2016 at 11:12:41 AM, John Wheeler (jwheeler1 at gmail.com) wrote:
>
> Hello everybody out there,
>
> I've been working on a Flask extension, called Flask-Ask, for programming
> Alexa skills on the Amazon Echo. I've been working on this for a few weeks
> now and have a release pushed up to pypi, samples, and documentation.
>
> The Alexa service is based on its own request / response model that uses
> JSON over HTTP. I made Flask-Ask's API similar to Flask's in that regard
> with routing / parameter mapping, context locals, and integration with
> Flask's template system.
>
> The code and samples are available at
>
> https://github.com/johnwheeler/flask-ask
>
> The documentation is here
>
> http://flask-ask.readthedocs.io/en/latest/
>
> I'd like to know what people think of the API and what features they want.
> I'm working on a tutorial that shows how to rapidly develop skills with
> Flask-Ask and ngrok.io, and I'm available for a Google Hangout if you
> want to try and need help in the interim.
>
> John
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From zufaellig at outlook.com  Sat May 14 22:30:17 2016
From: zufaellig at outlook.com (Patrick Rieser)
Date: Sun, 15 May 2016 02:30:17 +0000
Subject: [Flask] Add,
 Change and Delete Models during runtime with flask-sqlalchemy and
 flask-migrate
Message-ID: <DUB125-W3024F76E247D80B2EB21B0BF760@phx.gbl>


Hello everybody,
 
so I try to add, change and delete Models during runtime with 
flask-sqlalchemy and flask-migrate . To do that I plan to write/change/delete 
the mymodel.py file, create the migration script and then do the migration. So 
far so good. The problem is that I don't know what internally happens in Flask 
and flask-sqlalchemy. I guess that there is at least some internal caching/dict 
to store additional information (like class names, fields etc.) that should be 
added/changed/cleared accordingly. Does anybody have any clue about this? Any 
help is greatly appreciated!
 
 
With kind regards,
Patrick 		 	   		  
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From alejoar at gmail.com  Sun May 15 04:58:40 2016
From: alejoar at gmail.com (Alejo Arias)
Date: Sun, 15 May 2016 10:58:40 +0200
Subject: [Flask] Add,
 Change and Delete Models during runtime with flask-sqlalchemy and
 flask-migrate
In-Reply-To: <CAMfrFKQA3v8aWNSVicFpD_zeS-4sWvbYM1Lnj6_1U9QfrU51RA@mail.gmail.com>
References: <DUB125-W3024F76E247D80B2EB21B0BF760@phx.gbl>
 <CAMfrFKQT5GZWRU-n5U+kG2U3X+t-0HHnMdmvX1nXCVUmOmL_SA@mail.gmail.com>
 <CAMfrFKQA3v8aWNSVicFpD_zeS-4sWvbYM1Lnj6_1U9QfrU51RA@mail.gmail.com>
Message-ID: <CAMfrFKQi++-BCqTqAZG12ocPghcOp_axjDws=7KY1wkCvHuEsQ@mail.gmail.com>

If you change the models you are basically changing the app code.

I don't think this would be possible, a restart is needed at some point to
acknowledge the new models. Even if you do the changes directly in the DB,
you'll start getting exceptions when the app tries to do stuff with things
that no longer exist in your new models.

What's the purpose of this?
On May 15, 2016 04:31, "Patrick Rieser" <zufaellig at outlook.com> wrote:

Hello everybody,

so I try to add, change and delete Models during runtime with
flask-sqlalchemy and flask-migrate . To do that I plan to
write/change/delete the mymodel.py file, create the migration script and
then do the migration. So far so good. The problem is that I don't know
what internally happens in Flask and flask-sqlalchemy. I guess that there
is at least some internal caching/dict to store additional information
(like class names, fields etc.) that should be added/changed/cleared
accordingly. Does anybody have any clue about this? Any help is greatly
appreciated!


With kind regards,
Patrick

_______________________________________________
Flask mailing list
Flask at python.org
https://mail.python.org/mailman/listinfo/flask
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From zufaellig at outlook.com  Sun May 15 16:45:44 2016
From: zufaellig at outlook.com (Patrick Rieser)
Date: Sun, 15 May 2016 20:45:44 +0000
Subject: [Flask] Add,
 Change and Delete Models during runtime with flask-sqlalchemy and
 flask-migrate
Message-ID: <DUB125-W460998B7688CD57AC95E29BF760@phx.gbl>

The purpose of this is that it would be possible then to serve multiple customers whose frontend overlaps mostly (the rest would be hidden behind feature locks), but where the table layout differs significantly from, a single application. "I don't think this would be possible, a restart is needed at some point to acknowledge the new models. Even if you do the changes directly in the DB, you'll start getting exceptions when the app tries to do stuff with things that no longer exist in your new models."The way I understand it (please correct me if I am wrong) is that the mapper in SQLAlchemy takes the module declaration and mapps it to a table which is stored at the metadata instance. So the plan would be to use manual mapping when a new table is created at runtime and to use metadata.remove to remove the table object from sqlalchemy.I think that one should in theory even be able to use the Table class from sqlalchemy core to define and register tables in as well as use metadata.remove to remove them on the fly and use alembic to do the changes in the database. But I have absolutely no clue if I would be able to still use flask-sqlalchemy which is no hard requirement, but makes thinks a lot easier.The problem is this goes way beyond my knowledge of flask-sqlalchmy (which as far as I know only wraps and extends sqlalchemy) and sqlalchemy in general, so I was looking for some pointers or help.Best wishes,PatrickDate: Sun, 15 May 2016 10:58:40 +0200Subject: Re: [Flask] Add, Change and Delete Models during runtime with flask-sqlalchemy and flask-migrateFrom: alejoar at gmail.comTo: zufaellig at outlook.comCC: flask at python.orgIf you change the models you are basically changing the app code.I don't think this would be possible, a restart is needed at some point to acknowledge the new models. Even if you do the changes directly in the DB, you'll start getting exceptions when the app tries to do stuff with things that no longer exist in your new models. What's the purpose of this? On May 15, 2016 04:31, "Patrick Rieser" <zufaellig at outlook.com> wrote:Hello everybody, so I try to add, change and delete Models during runtime with flask-sqlalchemy and flask-migrate . To do that I plan to write/change/delete the mymodel.py file, create the migration script and then do the migration. So far so good. The problem is that I don't know what internally happens in Flask and flask-sqlalchemy. I guess that there is at least some internal caching/dict to store additional information (like class names, fields etc.) that should be added/changed/cleared accordingly. Does anybody have any clue about this? Any help is greatly appreciated!  With kind regards,Patrick_______________________________________________Flask mailing listFlask at python.orghttps://mail.python.org/mailman/listinfo/flask 		 	   		  
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From ford.anthonyj at gmail.com  Mon May 16 11:17:55 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Mon, 16 May 2016 10:17:55 -0500
Subject: [Flask] Add,
 Change and Delete Models during runtime with flask-sqlalchemy and
 flask-migrate
In-Reply-To: <DUB125-W460998B7688CD57AC95E29BF760@phx.gbl>
References: <DUB125-W460998B7688CD57AC95E29BF760@phx.gbl>
Message-ID: <CABC5zqjMzxoG6+VSA6OZToN9Te8kfKGbk0Ki3fY2Uq4_sLk4yg@mail.gmail.com>

Would it not make more sense to run these as separate blueprints/apps?
Dispatch to the appropriate blueprint and DB/model once logged in?

That seems like it would work for your application, and would require
minimal re-writing/modding of the existing Flask/SQLAlchemy packages.

Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Sun, May 15, 2016 at 3:45 PM, Patrick Rieser <zufaellig at outlook.com>
wrote:

> The purpose of this is that it would be possible then to serve multiple
> customers whose frontend overlaps mostly (the rest would be hidden behind
> feature locks), but where the table layout differs significantly from, a
> single application.
>
> "I don't think this would be possible, a restart is needed at some point
> to acknowledge the new models. Even if you do the changes directly in the
> DB, you'll start getting exceptions when the app tries to do stuff with
> things that no longer exist in your new models."
>
>
> The way I understand it (please correct me if I am wrong) is that the
> mapper in SQLAlchemy takes the module declaration and mapps it to a table
> which is stored at the metadata instance. So the plan would be to use
> manual mapping when a new table is created at runtime and to use
> metadata.remove to remove the table object from sqlalchemy.
>
> I think that one should in theory even be able to use the Table class from
> sqlalchemy core to define and register tables in as well as use
> metadata.remove to remove them on the fly and use alembic to do the changes
> in the database. But I have absolutely no clue if I would be able to still
> use flask-sqlalchemy which is no hard requirement, but makes thinks a lot
> easier.
>
> The problem is this goes way beyond my knowledge of flask-sqlalchmy (which
> as far as I know only wraps and extends sqlalchemy) and sqlalchemy in
> general, so I was looking for some pointers or help.
>
>
> Best wishes,
> Patrick
>
>
>
> ------------------------------
> Date: Sun, 15 May 2016 10:58:40 +0200
> Subject: Re: [Flask] Add, Change and Delete Models during runtime with
> flask-sqlalchemy and flask-migrate
> From: alejoar at gmail.com
> To: zufaellig at outlook.com
> CC: flask at python.org
>
>
> If you change the models you are basically changing the app code.
>
> I don't think this would be possible, a restart is needed at some point to
> acknowledge the new models. Even if you do the changes directly in the DB,
> you'll start getting exceptions when the app tries to do stuff with things
> that no longer exist in your new models.
>
> What's the purpose of this?
> On May 15, 2016 04:31, "Patrick Rieser" <zufaellig at outlook.com> wrote:
>
> Hello everybody,
>
> so I try to add, change and delete Models during runtime with
> flask-sqlalchemy and flask-migrate . To do that I plan to
> write/change/delete the mymodel.py file, create the migration script and
> then do the migration. So far so good. The problem is that I don't know
> what internally happens in Flask and flask-sqlalchemy. I guess that there
> is at least some internal caching/dict to store additional information
> (like class names, fields etc.) that should be added/changed/cleared
> accordingly. Does anybody have any clue about this? Any help is greatly
> appreciated!
>
>
> With kind regards,
> Patrick
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From and.damore at gmail.com  Mon May 16 13:28:43 2016
From: and.damore at gmail.com (Andrea D'Amore)
Date: Mon, 16 May 2016 19:28:43 +0200
Subject: [Flask] Add,
 Change and Delete Models during runtime with flask-sqlalchemy and
 flask-migrate
In-Reply-To: <CABC5zqjMzxoG6+VSA6OZToN9Te8kfKGbk0Ki3fY2Uq4_sLk4yg@mail.gmail.com>
References: <DUB125-W460998B7688CD57AC95E29BF760@phx.gbl>
 <CABC5zqjMzxoG6+VSA6OZToN9Te8kfKGbk0Ki3fY2Uq4_sLk4yg@mail.gmail.com>
Message-ID: <CAMonFrTZF8RVBJBk=rYKEXxdMCWVWBmzoO3eCwoHrWZDwwRUkg@mail.gmail.com>

> On Sun, May 15, 2016 at 3:45 PM, Patrick Rieser <zufaellig at outlook.com>
> wrote:
>> The purpose of this is that it would be possible then to serve multiple
>> customers whose frontend overlaps mostly (the rest would be hidden behind
>> feature locks), but where the table layout differs significantly from, a
>> single application.

On 16 May 2016 at 17:17, Anthony Ford <ford.anthonyj at gmail.com> wrote:
> Would it not make more sense to run these as separate blueprints/apps?
> Dispatch to the appropriate blueprint and DB/model once logged in?

That's what sound reasonable from the need presented there.

> That seems like it would work for your application, and would require
> minimal re-writing/modding of the existing Flask/SQLAlchemy packages.

I'm still failing to see where that on-the-fly mapping chang is
needed, i.e. why not just restarting the app. Is it something done to
gain a more insightful understanding of the various components?


-- 
Andrea

From matt at mattshields.org  Wed May 18 09:48:32 2016
From: matt at mattshields.org (Matt Shields)
Date: Wed, 18 May 2016 09:48:32 -0400
Subject: [Flask] Uploading image into MySQL Blob
Message-ID: <CAOTD2YTz-B9brNrrttxc1K3U8koz_Sx0UrDCXT0Gg5vf3k7Jxg@mail.gmail.com>

I'm trying to get an image uploaded through a form and inserted into a Blob
field in MySQL.  This doesn't seem to work.  What's wrong?

clientid = request.form['clientid']
file = request.files['logo']
path = config.app_path()
filename = "%s-logo.png" % clientid
local_file = "%s/static/%s" % (path, filename)
file.save(local_file)
sql = "UPDATE client SET logo = LOAD_FILE('%s') WHERE clientid = '%s'" %
(local_file, clientid)
dbQuery(sql)   #This is custom function to run a sql query.

Matt
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From giannis.pin at gmail.com  Wed May 18 11:30:48 2016
From: giannis.pin at gmail.com (Ioannis Pinakoulakis)
Date: Wed, 18 May 2016 17:30:48 +0200
Subject: [Flask] Uploading image into MySQL Blob
In-Reply-To: <CAOTD2YTz-B9brNrrttxc1K3U8koz_Sx0UrDCXT0Gg5vf3k7Jxg@mail.gmail.com>
References: <CAOTD2YTz-B9brNrrttxc1K3U8koz_Sx0UrDCXT0Gg5vf3k7Jxg@mail.gmail.com>
Message-ID: <44AE6AF3-93E1-48F1-B9FA-9A42BC974641@gmail.com>

Hi Matt,

Firstly, I would like to mention that a better approach would be to not store the image in the database, rather a link that points to the each image probably in the file system. This will speed up your application, since 1) you query the database for less data, 2) reading from the file system is faster and finally 3) in case you want to move the images on a CDN or in general serve them from a separate server then this does not block you. Thus easier migrations.

Back to your original problem. Do you get any error or something?

Ioannis

18 maj 2016, 15:48, ?/? Matt Shields <matt at mattshields.org> ??????:

> I'm trying to get an image uploaded through a form and inserted into a Blob field in MySQL.  This doesn't seem to work.  What's wrong?
> 
> clientid = request.form['clientid']
> file = request.files['logo']
> path = config.app_path()
> filename = "%s-logo.png" % clientid
> local_file = "%s/static/%s" % (path, filename)
> file.save(local_file)
> sql = "UPDATE client SET logo = LOAD_FILE('%s') WHERE clientid = '%s'" % (local_file, clientid)
> dbQuery(sql)   #This is custom function to run a sql query.
> 
> Matt
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask

From matt at mattshields.org  Wed May 18 11:58:39 2016
From: matt at mattshields.org (Matt Shields)
Date: Wed, 18 May 2016 11:58:39 -0400
Subject: [Flask] Uploading image into MySQL Blob
In-Reply-To: <44AE6AF3-93E1-48F1-B9FA-9A42BC974641@gmail.com>
References: <CAOTD2YTz-B9brNrrttxc1K3U8koz_Sx0UrDCXT0Gg5vf3k7Jxg@mail.gmail.com>
 <44AE6AF3-93E1-48F1-B9FA-9A42BC974641@gmail.com>
Message-ID: <CAOTD2YQ3n339hd2nJaK_i8KABmAQJZbwbTguZbpRZwNhSTtVeA@mail.gmail.com>

Actually, disregard my question.  I ended up using a AWS S3 bucket to host
the images.  I was able to convert the code in a matter of minutes,
compared to the 2 days I wasted trying to get images uploaded into MySQL.

Matt

On Wed, May 18, 2016 at 11:30 AM, Ioannis Pinakoulakis <
giannis.pin at gmail.com> wrote:

> Hi Matt,
>
> Firstly, I would like to mention that a better approach would be to not
> store the image in the database, rather a link that points to the each
> image probably in the file system. This will speed up your application,
> since 1) you query the database for less data, 2) reading from the file
> system is faster and finally 3) in case you want to move the images on a
> CDN or in general serve them from a separate server then this does not
> block you. Thus easier migrations.
>
> Back to your original problem. Do you get any error or something?
>
> Ioannis
>
> 18 maj 2016, 15:48, ?/? Matt Shields <matt at mattshields.org> ??????:
>
> > I'm trying to get an image uploaded through a form and inserted into a
> Blob field in MySQL.  This doesn't seem to work.  What's wrong?
> >
> > clientid = request.form['clientid']
> > file = request.files['logo']
> > path = config.app_path()
> > filename = "%s-logo.png" % clientid
> > local_file = "%s/static/%s" % (path, filename)
> > file.save(local_file)
> > sql = "UPDATE client SET logo = LOAD_FILE('%s') WHERE clientid = '%s'" %
> (local_file, clientid)
> > dbQuery(sql)   #This is custom function to run a sql query.
> >
> > Matt
> > _______________________________________________
> > Flask mailing list
> > Flask at python.org
> > https://mail.python.org/mailman/listinfo/flask
>
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From ahall at autodist.com  Thu May 19 14:04:13 2016
From: ahall at autodist.com (Alex Hall)
Date: Thu, 19 May 2016 14:04:13 -0400
Subject: [Flask] Default/Disabled choices in WTForms SelectField?
Message-ID: <CA+Q8_JfT1v3AOns738r419F=W6utE7JXXPBFHH_6tJ3TnMr=Pg@mail.gmail.com>

Hi all,
This is perhaps more of a WTForms question, but I'm hoping people here will
know how to do this in Flask-WTF.

I have three select lists, and until the user clicks them, they're all
blank. I want to have them each show an unselectable option to indicate
that they exist, something like
option value="1" default disabled>Please choose an option</option

I can't find a way to do this in WTF though. I found one forum that said
you can pass a "default=" argument to the SelectField constructor, but I
don't see that in the official documentation. Plus, that doesn't tell me
how to make the same item disabled, or if what goes after the equals sign
is an index or an element in the choices list of values.

Thanks for any suggestions. If this is doable, will it work the same way on
SelectMultipleField items as well?

-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Thu May 19 15:16:51 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Thu, 19 May 2016 14:16:51 -0500
Subject: [Flask] Default/Disabled choices in WTForms SelectField?
In-Reply-To: <CA+Q8_JfT1v3AOns738r419F=W6utE7JXXPBFHH_6tJ3TnMr=Pg@mail.gmail.com>
References: <CA+Q8_JfT1v3AOns738r419F=W6utE7JXXPBFHH_6tJ3TnMr=Pg@mail.gmail.com>
Message-ID: <CABC5zqjcA3kn-=-OGUq827m5XOEUza=XBTKiuA0GvoLyrH5=FA@mail.gmail.com>

Hey Alex,

So the you can pass the default  via the keyword argument `default`. In
something like a SelectField, you just give it the same value as the
default choice (i.e. if you have a choice that's `(1,"My First Choice")`,
default would be `default=1`).

Now for disabled, you have to slightly abuse HTML. From what I remember, as
long as "disabled" is present within the tag, most browsers will read that
as disabled. Its supposed to be a boolean field, and supposedly setting it
to a null string or "false" should enable the field, but that's never
worked for me. You can assign "disabled" a value, which should cause it to
evaluate as true for all browsers. Something as simple as
disabled="disabled in your input field should be enough to cause the
browser to render it as disabled.

So WTForms will accept keyword arguments to render to the field when
generating the html. So in your template, you can feed it
`disabled="disabled"` when you print your field (i.e.
myform.selfield(disabled="disabled")). Or if you want all instances of this
form to have that field disabled by default, and your JS will enable it
later, you can use the `render_kw` argument in the SelectField when you
declare your form.

All of this is listed in the WTForms docs (
http://wtforms.readthedocs.io/en/latest/fields.html#the-field-base-class).
It's part of the Field base class. Hope this helps!

I put together a Gist with an example:
https://gist.github.com/ajford/564cd00b361a08630b626d24408206b4

Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Thu, May 19, 2016 at 1:04 PM, Alex Hall <ahall at autodist.com> wrote:

> Hi all,
> This is perhaps more of a WTForms question, but I'm hoping people here
> will know how to do this in Flask-WTF.
>
> I have three select lists, and until the user clicks them, they're all
> blank. I want to have them each show an unselectable option to indicate
> that they exist, something like
> option value="1" default disabled>Please choose an option</option
>
> I can't find a way to do this in WTF though. I found one forum that said
> you can pass a "default=" argument to the SelectField constructor, but I
> don't see that in the official documentation. Plus, that doesn't tell me
> how to make the same item disabled, or if what goes after the equals sign
> is an index or an element in the choices list of values.
>
> Thanks for any suggestions. If this is doable, will it work the same way
> on SelectMultipleField items as well?
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From nik.gen at gmx.de  Fri May 20 11:11:46 2016
From: nik.gen at gmx.de (Nikolaus Neusser)
Date: Fri, 20 May 2016 17:11:46 +0200
Subject: [Flask] Interchange data with main python application
Message-ID: <98a75866-31ac-1ec3-f4a5-1d1591f18575@gmx.de>

Hi everyone,

I'm using flask for the first time and after trying quite a lot, i still fail. :-(
I am wondering what i am doing wrong and if flask is the right way to go at all.

My objective:
    - I have a main python application, which basically is based on a PySide (QT4) event loop.
      This runs a bigger state machine and several other functions.
    - Now, i want to add a web interface which reads/sets parameters and displays a longer list of
      strings from the main application (variable length) .

Where i am:
    - The simple flask examples from various tutorials work fine for me.
    - BUT: I cannot combine my main application with flask, i.e. i don't know how to
      interchange the data between my main application and the flask route-functions.

What i tried:
    - running flask in a thread (QThread). Works fine for a simple example, i.e. deliver static html
      and react on get-request
    - run flask in main thread. Doesn't work since some of my functions rely on the qt event loop
    - interchanging data between my main application and flask in the thread. I tried this using the
      qt signal/slot mechanism.
      This doesn't work, because the signals which i have to define in the main application are not
      accessible within the flask route-functions.


I really hope you can give me some good advice.
I can post code snippets if it helps for clarification.

Thanks a lot,

Nik

From ford.anthonyj at gmail.com  Fri May 20 11:30:43 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Fri, 20 May 2016 10:30:43 -0500
Subject: [Flask] Interchange data with main python application
In-Reply-To: <98a75866-31ac-1ec3-f4a5-1d1591f18575@gmx.de>
References: <98a75866-31ac-1ec3-f4a5-1d1591f18575@gmx.de>
Message-ID: <CABC5zqit4KZJ1BOX1JXDUKb6_9AXhR8i_mzON9z=ZOGxK6U5uQ@mail.gmail.com>

My suggestion is to avoid running either within the other. If possible, try
running each standalone. For inter process communication, try using socket
communication, either with straight sockets or via something like zeromq or
similar.

--Ford
On May 20, 2016 10:12 AM, "Nikolaus Neusser" <nik.gen at gmx.de> wrote:

> Hi everyone,
>
> I'm using flask for the first time and after trying quite a lot, i still
> fail. :-(
> I am wondering what i am doing wrong and if flask is the right way to go
> at all.
>
> My objective:
>    - I have a main python application, which basically is based on a
> PySide (QT4) event loop.
>      This runs a bigger state machine and several other functions.
>    - Now, i want to add a web interface which reads/sets parameters and
> displays a longer list of
>      strings from the main application (variable length) .
>
> Where i am:
>    - The simple flask examples from various tutorials work fine for me.
>    - BUT: I cannot combine my main application with flask, i.e. i don't
> know how to
>      interchange the data between my main application and the flask
> route-functions.
>
> What i tried:
>    - running flask in a thread (QThread). Works fine for a simple example,
> i.e. deliver static html
>      and react on get-request
>    - run flask in main thread. Doesn't work since some of my functions
> rely on the qt event loop
>    - interchanging data between my main application and flask in the
> thread. I tried this using the
>      qt signal/slot mechanism.
>      This doesn't work, because the signals which i have to define in the
> main application are not
>      accessible within the flask route-functions.
>
>
> I really hope you can give me some good advice.
> I can post code snippets if it helps for clarification.
>
> Thanks a lot,
>
> Nik
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
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From vasudev at copyninja.info  Sun May 22 06:18:21 2016
From: vasudev at copyninja.info (Vasudev Kamath)
Date: Sun, 22 May 2016 15:48:21 +0530
Subject: [Flask] Unable to access backend application with
 DispatcherMiddleware deployment
Message-ID: <871t4u9z0y.fsf@rudra.copyninja.info>


Hello,

I've an application ? which uses "Combining application" deployment as
mentioned in Flask documentation here ?.  Application itself is written
as per ?.

I'm actually deploying 2 application one is frontend which is main app
and another backend app for serving API at /api ?. API application has
jsonrpc app which is exposed at /api/JSONRPC.

Both frontend and API uses Blueprints to add routing rules. API part
uses a custom decorator to register route for blueprint ? ?.

After creating app for api part I can see /api/JSONRPC registered in the
`url_map` but when I hit /api/JSONRPC I get 404 error. I'm unable to
figure out why this is happening. 

Can any one help me figure out what is causing 404 errors?. I did try
Google and also posted on Stack Overflow? but didn't get any solution
yet.


? https://github.com/libindic/Silpa-Flask/tree/development
? http://flask.pocoo.org/docs/0.10/patterns/appdispatch/#combining-applications
? http://mattupstate.com/blog/how-i-structure-my-flask-applications/
? https://github.com/libindic/Silpa-Flask/blob/development/wsgi.py
? https://github.com/libindic/Silpa-Flask/blob/development/silpa/api/__init__.py#L6
? https://github.com/libindic/Silpa-Flask/blob/development/silpa/api/jsonrpc.py#L27
? http://stackoverflow.com/questions/37241098/combining-2-flask-apps-using-dispatchermiddleware-instance-results-in-404-for-se

Thanks and Regards,

--
Vasudev

From colin at techdata.net.au  Sun May 22 22:07:25 2016
From: colin at techdata.net.au (Colin Haig)
Date: Mon, 23 May 2016 10:07:25 +0800
Subject: [Flask] SSL Apache
Message-ID: <6B7B4B5C-1CC5-4845-8A28-B0440EA1956A@techdata.net.au>

Hi All

I have a small flask app running on apache 2.4 on windows using HTTP but have problems with my virtual hosts entry file when trying load apache with SSL ? if I comment out my virtual hosts file in http.conf I can 
start apache with http.exe ?D SSL but if I uncomment my virtual host include in http.conf I can start apache with http.exe ?D SSL

Any help appreciated.

Regards

Colin

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From nik.gen at gmx.de  Mon May 23 17:02:08 2016
From: nik.gen at gmx.de (Nikolaus Neusser)
Date: Mon, 23 May 2016 23:02:08 +0200
Subject: [Flask] Interchange data with main python application
In-Reply-To: <CABC5zqit4KZJ1BOX1JXDUKb6_9AXhR8i_mzON9z=ZOGxK6U5uQ@mail.gmail.com>
References: <98a75866-31ac-1ec3-f4a5-1d1591f18575@gmx.de>
 <CABC5zqit4KZJ1BOX1JXDUKb6_9AXhR8i_mzON9z=ZOGxK6U5uQ@mail.gmail.com>
Message-ID: <8ddf37a3-d54f-982a-8e7b-910fee0045ae@gmx.de>

 >For inter process communication, try using socket communication, either with straight sockets or via something 
like zeromq or similar.

I think, that's the problem i have. Either way of inter process communication needs some kind of event loop.
Flask runs its own event loop, right?
So, how do i mix these two?

Nik


Am 20.05.2016 um 17:30 schrieb Anthony Ford:
>
> My suggestion is to avoid running either within the other. If possible, try running each standalone. For inter 
> process communication, try using socket communication, either with straight sockets or via something like zeromq 
> or similar.
>
> --Ford
>
> On May 20, 2016 10:12 AM, "Nikolaus Neusser" <nik.gen at gmx.de <mailto:nik.gen at gmx.de>> wrote:
>
>     Hi everyone,
>
>     I'm using flask for the first time and after trying quite a lot, i still fail. :-(
>     I am wondering what i am doing wrong and if flask is the right way to go at all.
>
>     My objective:
>        - I have a main python application, which basically is based on a PySide (QT4) event loop.
>          This runs a bigger state machine and several other functions.
>        - Now, i want to add a web interface which reads/sets parameters and displays a longer list of
>          strings from the main application (variable length) .
>
>     Where i am:
>        - The simple flask examples from various tutorials work fine for me.
>        - BUT: I cannot combine my main application with flask, i.e. i don't know how to
>          interchange the data between my main application and the flask route-functions.
>
>     What i tried:
>        - running flask in a thread (QThread). Works fine for a simple example, i.e. deliver static html
>          and react on get-request
>        - run flask in main thread. Doesn't work since some of my functions rely on the qt event loop
>        - interchanging data between my main application and flask in the thread. I tried this using the
>          qt signal/slot mechanism.
>          This doesn't work, because the signals which i have to define in the main application are not
>          accessible within the flask route-functions.
>
>
>     I really hope you can give me some good advice.
>     I can post code snippets if it helps for clarification.
>
>     Thanks a lot,
>
>     Nik
>     _______________________________________________
>     Flask mailing list
>     Flask at python.org <mailto:Flask at python.org>
>     https://mail.python.org/mailman/listinfo/flask
>

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From coreybrett at gmail.com  Mon May 23 17:34:24 2016
From: coreybrett at gmail.com (Corey Boyle)
Date: Mon, 23 May 2016 17:34:24 -0400
Subject: [Flask] Interchange data with main python application
In-Reply-To: <8ddf37a3-d54f-982a-8e7b-910fee0045ae@gmx.de>
References: <98a75866-31ac-1ec3-f4a5-1d1591f18575@gmx.de>
 <CABC5zqit4KZJ1BOX1JXDUKb6_9AXhR8i_mzON9z=ZOGxK6U5uQ@mail.gmail.com>
 <8ddf37a3-d54f-982a-8e7b-910fee0045ae@gmx.de>
Message-ID: <CAD=ssw2Jqfx1Bq5StrkgMBR9pAdwuT+zw=Pn34vrKrySR5adrg@mail.gmail.com>

Have each independent app store events in a common queue. Each app also
watches for those events in the queue and processes them accordingly. Take
a look at http://python-rq.org .
On May 23, 2016 5:02 PM, "Nikolaus Neusser" <nik.gen at gmx.de> wrote:

> >For inter process communication, try using socket communication, either
> with straight sockets or via something like zeromq or similar.
>
> I think, that's the problem i have. Either way of inter process
> communication needs some kind of event loop.
> Flask runs its own event loop, right?
> So, how do i mix these two?
>
> Nik
>
>
> Am 20.05.2016 um 17:30 schrieb Anthony Ford:
>
> My suggestion is to avoid running either within the other. If possible,
> try running each standalone. For inter process communication, try using
> socket communication, either with straight sockets or via something like
> zeromq or similar.
>
> --Ford
> On May 20, 2016 10:12 AM, "Nikolaus Neusser" <nik.gen at gmx.de> wrote:
>
>> Hi everyone,
>>
>> I'm using flask for the first time and after trying quite a lot, i still
>> fail. :-(
>> I am wondering what i am doing wrong and if flask is the right way to go
>> at all.
>>
>> My objective:
>>    - I have a main python application, which basically is based on a
>> PySide (QT4) event loop.
>>      This runs a bigger state machine and several other functions.
>>    - Now, i want to add a web interface which reads/sets parameters and
>> displays a longer list of
>>      strings from the main application (variable length) .
>>
>> Where i am:
>>    - The simple flask examples from various tutorials work fine for me.
>>    - BUT: I cannot combine my main application with flask, i.e. i don't
>> know how to
>>      interchange the data between my main application and the flask
>> route-functions.
>>
>> What i tried:
>>    - running flask in a thread (QThread). Works fine for a simple
>> example, i.e. deliver static html
>>      and react on get-request
>>    - run flask in main thread. Doesn't work since some of my functions
>> rely on the qt event loop
>>    - interchanging data between my main application and flask in the
>> thread. I tried this using the
>>      qt signal/slot mechanism.
>>      This doesn't work, because the signals which i have to define in the
>> main application are not
>>      accessible within the flask route-functions.
>>
>>
>> I really hope you can give me some good advice.
>> I can post code snippets if it helps for clarification.
>>
>> Thanks a lot,
>>
>> Nik
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ford.anthonyj at gmail.com  Mon May 23 22:11:19 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Mon, 23 May 2016 21:11:19 -0500
Subject: [Flask] Interchange data with main python application
In-Reply-To: <CAD=ssw2Jqfx1Bq5StrkgMBR9pAdwuT+zw=Pn34vrKrySR5adrg@mail.gmail.com>
References: <98a75866-31ac-1ec3-f4a5-1d1591f18575@gmx.de>
 <CABC5zqit4KZJ1BOX1JXDUKb6_9AXhR8i_mzON9z=ZOGxK6U5uQ@mail.gmail.com>
 <8ddf37a3-d54f-982a-8e7b-910fee0045ae@gmx.de>
 <CAD=ssw2Jqfx1Bq5StrkgMBR9pAdwuT+zw=Pn34vrKrySR5adrg@mail.gmail.com>
Message-ID: <CABC5zqg8H_D7meX-Q+q71by4iph4pnrQJagLPX6xhufXKvHfqQ@mail.gmail.com>

I was gonna recommend python-rq, I just couldn't remember what it was
called! Thanks for the link.



Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Mon, May 23, 2016 at 4:34 PM, Corey Boyle <coreybrett at gmail.com> wrote:

> Have each independent app store events in a common queue. Each app also
> watches for those events in the queue and processes them accordingly. Take
> a look at http://python-rq.org .
> On May 23, 2016 5:02 PM, "Nikolaus Neusser" <nik.gen at gmx.de> wrote:
>
>> >For inter process communication, try using socket communication, either
>> with straight sockets or via something like zeromq or similar.
>>
>> I think, that's the problem i have. Either way of inter process
>> communication needs some kind of event loop.
>> Flask runs its own event loop, right?
>> So, how do i mix these two?
>>
>> Nik
>>
>>
>> Am 20.05.2016 um 17:30 schrieb Anthony Ford:
>>
>> My suggestion is to avoid running either within the other. If possible,
>> try running each standalone. For inter process communication, try using
>> socket communication, either with straight sockets or via something like
>> zeromq or similar.
>>
>> --Ford
>> On May 20, 2016 10:12 AM, "Nikolaus Neusser" <nik.gen at gmx.de> wrote:
>>
>>> Hi everyone,
>>>
>>> I'm using flask for the first time and after trying quite a lot, i still
>>> fail. :-(
>>> I am wondering what i am doing wrong and if flask is the right way to go
>>> at all.
>>>
>>> My objective:
>>>    - I have a main python application, which basically is based on a
>>> PySide (QT4) event loop.
>>>      This runs a bigger state machine and several other functions.
>>>    - Now, i want to add a web interface which reads/sets parameters and
>>> displays a longer list of
>>>      strings from the main application (variable length) .
>>>
>>> Where i am:
>>>    - The simple flask examples from various tutorials work fine for me.
>>>    - BUT: I cannot combine my main application with flask, i.e. i don't
>>> know how to
>>>      interchange the data between my main application and the flask
>>> route-functions.
>>>
>>> What i tried:
>>>    - running flask in a thread (QThread). Works fine for a simple
>>> example, i.e. deliver static html
>>>      and react on get-request
>>>    - run flask in main thread. Doesn't work since some of my functions
>>> rely on the qt event loop
>>>    - interchanging data between my main application and flask in the
>>> thread. I tried this using the
>>>      qt signal/slot mechanism.
>>>      This doesn't work, because the signals which i have to define in
>>> the main application are not
>>>      accessible within the flask route-functions.
>>>
>>>
>>> I really hope you can give me some good advice.
>>> I can post code snippets if it helps for clarification.
>>>
>>> Thanks a lot,
>>>
>>> Nik
>>> _______________________________________________
>>> Flask mailing list
>>> Flask at python.org
>>> https://mail.python.org/mailman/listinfo/flask
>>>
>>
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
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From ahall at autodist.com  Fri May 27 16:15:36 2016
From: ahall at autodist.com (Alex Hall)
Date: Fri, 27 May 2016 16:15:36 -0400
Subject: [Flask] Anything I need to know using Jquery with Flask?
Message-ID: <CA+Q8_JfcJy9ORvN9-3pvmBH4NkdmQX33Dik+qxbd6vVUkagE+Q@mail.gmail.com>

I know this is an odd question, and I probably know the answer. But I'm
running into some really odd problems with Jquery, problems I can't find
anyone else having online. All I can think of is that there's something
with Flask, or Jinja, or something in those packages that means I have to
do something differently.

Mostly, things work fine. But onChange for a select list won't fire
correctly, and I'm getting a very obscure error when I try to use a certain
selector. Yet, mostly, I have no problems at all.

This isn't a Jquery list, so I won't post details here. If there's any way
that Flask might cause Jquery to go all funny, though, that would be great
to know. Again, I very much doubt this is the case, but I don't know what
else to try. Thanks in advance, and thanks for putting up with this
off-the-wall question.

-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Fri May 27 17:21:44 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Fri, 27 May 2016 16:21:44 -0500
Subject: [Flask] Anything I need to know using Jquery with Flask?
In-Reply-To: <CA+Q8_JfcJy9ORvN9-3pvmBH4NkdmQX33Dik+qxbd6vVUkagE+Q@mail.gmail.com>
References: <CA+Q8_JfcJy9ORvN9-3pvmBH4NkdmQX33Dik+qxbd6vVUkagE+Q@mail.gmail.com>
Message-ID: <CABC5zqgnQuOX1eS==FjR6ARqyQdA7q4w+eOdLN7oXejaC1vfPw@mail.gmail.com>

Are you getting an error in your JS console or in the Werkzeug debugger?

In general, there is very little you need to use jQuery, since it runs
client-side in the browser. jQuery shouldn't even be able to tell you are
running Flask vs your bog-standard HTTP server or PHP or whatever.

There are a few oddball things you may need to treat differently if you use
jQuery to submit AJAX or JSON requests, but that shouldn't affect UI things
like onChange events and the like.



Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com

On Fri, May 27, 2016 at 3:15 PM, Alex Hall <ahall at autodist.com> wrote:

> I know this is an odd question, and I probably know the answer. But I'm
> running into some really odd problems with Jquery, problems I can't find
> anyone else having online. All I can think of is that there's something
> with Flask, or Jinja, or something in those packages that means I have to
> do something differently.
>
> Mostly, things work fine. But onChange for a select list won't fire
> correctly, and I'm getting a very obscure error when I try to use a certain
> selector. Yet, mostly, I have no problems at all.
>
> This isn't a Jquery list, so I won't post details here. If there's any way
> that Flask might cause Jquery to go all funny, though, that would be great
> to know. Again, I very much doubt this is the case, but I don't know what
> else to try. Thanks in advance, and thanks for putting up with this
> off-the-wall question.
>
> --
> Alex Hall
> Automatic Distributors, IT department
> ahall at autodist.com
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From ahall at autodist.com  Fri May 27 17:27:16 2016
From: ahall at autodist.com (Alex Hall)
Date: Fri, 27 May 2016 17:27:16 -0400
Subject: [Flask] Anything I need to know using Jquery with Flask?
In-Reply-To: <CABC5zqgnQuOX1eS==FjR6ARqyQdA7q4w+eOdLN7oXejaC1vfPw@mail.gmail.com>
References: <CA+Q8_JfcJy9ORvN9-3pvmBH4NkdmQX33Dik+qxbd6vVUkagE+Q@mail.gmail.com>
 <CABC5zqgnQuOX1eS==FjR6ARqyQdA7q4w+eOdLN7oXejaC1vfPw@mail.gmail.com>
Message-ID: <CA+Q8_JeOxrGxB2UQ066qc+rX5u7eFkTBo0=LucZr98be1HsgZw@mail.gmail.com>

On Fri, May 27, 2016 at 5:21 PM, Anthony Ford <ford.anthonyj at gmail.com>
wrote:

> Are you getting an error in your JS console or in the Werkzeug debugger?
> The web console. That's why I knew this would be a very long shot. The
> only thing that comes close is a missing CSRF token in the Nginx log after
> a certain Jquery selector runs. It tries to disable certain elements of a
> form, and I suspect it disables the hidden ones. But everything else is
> browser side.
> In general, there is very little you need to use jQuery, since it runs
> client-side in the browser. jQuery shouldn't even be able to tell you are
> running Flask vs your bog-standard HTTP server or PHP or whatever.
>
> Exactly, but I wasn't sure where else to ask. The only other thing I can
think of is that, because of the way my templates are set up, the script is
in the body of the page and not the head. But that shouldn't matter.

> There are a few oddball things you may need to treat differently if you
> use jQuery to submit AJAX or JSON requests, but that shouldn't affect UI
> things like onChange events and the like.
>

I've actually been using Ajax successfully for weeks--Flask made that very
easy to set up, and I was able to write the backend in Python. I love doing
that. :)

>
>
>
> Anthony Ford,
> KF5IBN,
> ford.anthonyj at gmail.com
>
> On Fri, May 27, 2016 at 3:15 PM, Alex Hall <ahall at autodist.com> wrote:
>
>> I know this is an odd question, and I probably know the answer. But I'm
>> running into some really odd problems with Jquery, problems I can't find
>> anyone else having online. All I can think of is that there's something
>> with Flask, or Jinja, or something in those packages that means I have to
>> do something differently.
>>
>> Mostly, things work fine. But onChange for a select list won't fire
>> correctly, and I'm getting a very obscure error when I try to use a certain
>> selector. Yet, mostly, I have no problems at all.
>>
>> This isn't a Jquery list, so I won't post details here. If there's any
>> way that Flask might cause Jquery to go all funny, though, that would be
>> great to know. Again, I very much doubt this is the case, but I don't know
>> what else to try. Thanks in advance, and thanks for putting up with this
>> off-the-wall question.
>>
>> --
>> Alex Hall
>> Automatic Distributors, IT department
>> ahall at autodist.com
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>


-- 
Alex Hall
Automatic Distributors, IT department
ahall at autodist.com
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From ford.anthonyj at gmail.com  Fri May 27 17:33:55 2016
From: ford.anthonyj at gmail.com (Anthony Ford)
Date: Fri, 27 May 2016 16:33:55 -0500
Subject: [Flask] Anything I need to know using Jquery with Flask?
In-Reply-To: <CA+Q8_JeOxrGxB2UQ066qc+rX5u7eFkTBo0=LucZr98be1HsgZw@mail.gmail.com>
References: <CA+Q8_JfcJy9ORvN9-3pvmBH4NkdmQX33Dik+qxbd6vVUkagE+Q@mail.gmail.com>
 <CABC5zqgnQuOX1eS==FjR6ARqyQdA7q4w+eOdLN7oXejaC1vfPw@mail.gmail.com>
 <CA+Q8_JeOxrGxB2UQ066qc+rX5u7eFkTBo0=LucZr98be1HsgZw@mail.gmail.com>
Message-ID: <CABC5zqhFFk87Dx6wYvfNsxzQoRLYFd=H0QD3qZAbgG7Xi81Y9g@mail.gmail.com>

On Fri, May 27, 2016 at 4:27 PM, Alex Hall <ahall at autodist.com> wrote:

> Exactly, but I wasn't sure where else to ask. The only other thing I can
> think of is that, because of the way my templates are set up, the script is
> in the body of the page and not the head. But that shouldn't matter.


No, it really shouldn't. I use that approach with a lot of my stuff too. It
makes pages load a bit faster (there's an article on it somewhere that I
don't really feel like looking up right now). One thing that can be a
gotcha with that is to make sure your jQuery itself (jquery.xyz.min.js
usually) is sourced before your page JS. Now if the onChange is the only
thing not working, then that won't be your problem.

Are you familiar with the JS debugger in Chrome? If not, look into it. I
find it amazingly useful for writing the JS side of my apps. In case you
aren't, see these links:

https://www.codeschool.com/courses/discover-devtools
https://developer.chrome.com/devtools
https://developer.chrome.com/devtools/docs/videos



Anthony Ford,
KF5IBN,
ford.anthonyj at gmail.com
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From zufaellig at outlook.com  Sat May 28 21:40:03 2016
From: zufaellig at outlook.com (Patrick Rieser)
Date: Sun, 29 May 2016 01:40:03 +0000
Subject: [Flask] Add,
 Change and Delete Models during runtime with flask-sqlalchemy and
 flask-migrate
In-Reply-To: <CABC5zqjMzxoG6+VSA6OZToN9Te8kfKGbk0Ki3fY2Uq4_sLk4yg@mail.gmail.com>
References: <DUB125-W460998B7688CD57AC95E29BF760@phx.gbl>,
 <CABC5zqjMzxoG6+VSA6OZToN9Te8kfKGbk0Ki3fY2Uq4_sLk4yg@mail.gmail.com>
Message-ID: <DUB125-W75A385486E377CC4CAE7F5BF440@phx.gbl>

Dear Anthony Ford,
thank you very much for your answer and sorry for my late reply (have been quite ill). I have to admit, that I never fully read up on blueprints. This seems to be quite a good and viable approach and should work well.
The thing is, I am curious now about runtime model alterations and I simply want to know in order to satisfy my curiousity how this can be accomplished - even if it goes unused. That being said, I realized that this should be a question for the SQLAlchemy mailing list.

Once more thank you very much and best whishes,Patrick


From: ford.anthonyj at gmail.com
Date: Mon, 16 May 2016 10:17:55 -0500
Subject: Re: [Flask] Add, Change and Delete Models during runtime with flask-sqlalchemy and flask-migrate
To: zufaellig at outlook.com
CC: flask at python.org

Would it not make more sense to run these as separate blueprints/apps? Dispatch to the appropriate blueprint and DB/model once logged in?
That seems like it would work for your application, and would require minimal re-writing/modding of the existing Flask/SQLAlchemy packages.Anthony Ford,
KF5IBN,ford.anthonyj at gmail.com

On Sun, May 15, 2016 at 3:45 PM, Patrick Rieser <zufaellig at outlook.com> wrote:



The purpose of this is that it would be possible then to serve multiple customers whose frontend overlaps mostly (the rest would be hidden behind feature locks), but where the table layout differs significantly from, a single application. "I don't think this would be possible, a restart is needed at some point to acknowledge the new models. Even if you do the changes directly in the DB, you'll start getting exceptions when the app tries to do stuff with things that no longer exist in your new models."The way I understand it (please correct me if I am wrong) is that the mapper in SQLAlchemy takes the module declaration and mapps it to a table which is stored at the metadata instance. So the plan would be to use manual mapping when a new table is created at runtime and to use metadata.remove to remove the table object from sqlalchemy.I think that one should in theory even be able to use the Table class from sqlalchemy core to define and register tables in as well as use metadata.remove to remove them on the fly and use alembic to do the changes in the database. But I have absolutely no clue if I would be able to still use flask-sqlalchemy which is no hard requirement, but makes thinks a lot easier.The problem is this goes way beyond my knowledge of flask-sqlalchmy (which as far as I know only wraps and extends sqlalchemy) and sqlalchemy in general, so I was looking for some pointers or help.Best wishes,PatrickDate: Sun, 15 May 2016 10:58:40 +0200Subject: Re: [Flask] Add, Change and Delete Models during runtime with flask-sqlalchemy and flask-migrateFrom: alejoar at gmail.comTo: zufaellig at outlook.comCC: flask at python.orgIf you change the models you are basically changing the app code.I don't think this would be possible, a restart is needed at some point to acknowledge the new models. Even if you do the changes directly in the DB, you'll start getting exceptions when the app tries to do stuff with things that no longer exist in your new models. What's the purpose of this? On May 15, 2016 04:31, "Patrick Rieser" <zufaellig at outlook.com> wrote:Hello everybody, so I try to add, change and delete Models during runtime with flask-sqlalchemy and flask-migrate . To do that I plan to write/change/delete the mymodel.py file, create the migration script and then do the migration. So far so good. The problem is that I don't know what internally happens in Flask and flask-sqlalchemy. I guess that there is at least some internal caching/dict to store additional information (like class names, fields etc.) that should be added/changed/cleared accordingly. Does anybody have any clue about this? Any help is greatly appreciated!  With kind regards,Patrick_______________________________________________Flask mailing listFlask at python.orghttps://mail.python.org/mailman/listinfo/flask 		 	   		  

_______________________________________________

Flask mailing list

Flask at python.org

https://mail.python.org/mailman/listinfo/flask



 		 	   		  
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From aimanparvaiz at gmail.com  Sun May 29 21:56:28 2016
From: aimanparvaiz at gmail.com (aiman parvaiz)
Date: Sun, 29 May 2016 18:56:28 -0700
Subject: [Flask] Flask secret key for mobile app client
Message-ID: <CANR1tAyOrTUViVRNr236xxGVtMFx1XJvWU270X+tCPoT_XuAoA@mail.gmail.com>

Hi all
I am new to flask and am writing a REST API backend for a mobile app. My
question is how can I ensure that call to my endpoints is only being done
by my mobile app and not by some one who has guessed the endpoint.
What would be the best way to avoid this kind of behavior.

Thanks
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From unai at sysbible.org  Mon May 30 00:09:38 2016
From: unai at sysbible.org (Unai Rodriguez)
Date: Mon, 30 May 2016 12:09:38 +0800
Subject: [Flask] Flask secret key for mobile app client
In-Reply-To: <CANR1tAyOrTUViVRNr236xxGVtMFx1XJvWU270X+tCPoT_XuAoA@mail.gmail.com>
References: <CANR1tAyOrTUViVRNr236xxGVtMFx1XJvWU270X+tCPoT_XuAoA@mail.gmail.com>
Message-ID: <1464581378.1311398.622307097.45728CEA@webmail.messagingengine.com>

If the people using the app can be anyone (I.e. it's open to general
public) you cannot. Typically SSL I.e. HTTPS) plus authentication is
used for this.
 
If the people that are supposed to access have something in common (I.e.
they come from a specific office, etc) then you might be able to add
rules on a firewalll. But that can be a problem (rules not correct or
people accessing through a VPN etc). I guess the only way is if the app
is served only to the people that are supposed to access the through
some sort of a corporate /private network .
 
 
 
-- unai
 
 
On Mon, May 30, 2016, at 09:56 AM, aiman parvaiz wrote:
> Hi all
> I am new to flask and am writing a REST API backend for a mobile app.
> My question is how can I ensure that call to my endpoints is only
> being done by my mobile app and not by some one who has guessed the
> endpoint.
> What would be the best way to avoid this kind of behavior.
> Thanks
> _________________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
 
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From aimanparvaiz at gmail.com  Mon May 30 03:07:04 2016
From: aimanparvaiz at gmail.com (Aiman Parvaiz)
Date: Mon, 30 May 2016 00:07:04 -0700
Subject: [Flask] Flask secret key for mobile app client
In-Reply-To: <1464581378.1311398.622307097.45728CEA@webmail.messagingengine.com>
References: <CANR1tAyOrTUViVRNr236xxGVtMFx1XJvWU270X+tCPoT_XuAoA@mail.gmail.com>
 <1464581378.1311398.622307097.45728CEA@webmail.messagingengine.com>
Message-ID: <755EEE64-E942-45B7-9108-B1BFB227B27C@gmail.com>

Thanks for the response Unai. This app would be open to the general public indeed. Can you please throw more light on SSL+ authentication?
I would be using SSL for this but what do you mean by authentication from mobile phone?


Sent from my iPhone

> On May 29, 2016, at 9:09 PM, Unai Rodriguez <unai at sysbible.org> wrote:
> 
> If the people using the app can be anyone (I.e. it's open to general public) you cannot. Typically SSL I.e. HTTPS) plus authentication is used for this.
>  
> If the people that are supposed to access have something in common (I.e. they come from a specific office, etc) then you might be able to add rules on a firewalll. But that can be a problem (rules not correct or people accessing through a VPN etc). I guess the only way is if the app is served only to the people that are supposed to access the through some sort of a corporate /private network .
>  
>  
>  
> -- unai
>  
>  
>> On Mon, May 30, 2016, at 09:56 AM, aiman parvaiz wrote:
>> Hi all
>> I am new to flask and am writing a REST API backend for a mobile app. My question is how can I ensure that call to my endpoints is only being done by my mobile app and not by some one who has guessed the endpoint. 
>> What would be the best way to avoid this kind of behavior.
>> Thanks
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>  
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
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From aimanparvaiz at gmail.com  Mon May 30 03:46:03 2016
From: aimanparvaiz at gmail.com (aiman parvaiz)
Date: Mon, 30 May 2016 00:46:03 -0700
Subject: [Flask] Flask secret key for mobile app client
In-Reply-To: <755EEE64-E942-45B7-9108-B1BFB227B27C@gmail.com>
References: <CANR1tAyOrTUViVRNr236xxGVtMFx1XJvWU270X+tCPoT_XuAoA@mail.gmail.com>
 <1464581378.1311398.622307097.45728CEA@webmail.messagingengine.com>
 <755EEE64-E942-45B7-9108-B1BFB227B27C@gmail.com>
Message-ID: <CANR1tAzFu23nYRzopk+_T4jwBsV-=ZM38OZVbekwwM=CZJ+B0A@mail.gmail.com>

The case under consideration is that right now any one can jump on a tool
as simple as Postman(on Chrome browser), construct the API call and get
data from the backend. I need a way to allow only mobile devices with the
installed app to see the returned data and how can I ensure that a API call
from any client other than mobile devices don't get a response from my
server.

I would appreciate any help I can get here.

Thanks

On Mon, May 30, 2016 at 12:07 AM, Aiman Parvaiz <aimanparvaiz at gmail.com>
wrote:

> Thanks for the response Unai. This app would be open to the general public
> indeed. Can you please throw more light on SSL+ authentication?
> I would be using SSL for this but what do you mean by authentication from
> mobile phone?
>
>
> Sent from my iPhone
>
> On May 29, 2016, at 9:09 PM, Unai Rodriguez <unai at sysbible.org> wrote:
>
> If the people using the app can be anyone (I.e. it's open to general
> public) you cannot. Typically SSL I.e. HTTPS) plus authentication is used
> for this.
>
> If the people that are supposed to access have something in common (I.e.
> they come from a specific office, etc) then you might be able to add rules
> on a firewalll. But that can be a problem (rules not correct or people
> accessing through a VPN etc). I guess the only way is if the app is served
> only to the people that are supposed to access the through some sort of a
> corporate /private network .
>
>
>
> -- unai
>
>
> On Mon, May 30, 2016, at 09:56 AM, aiman parvaiz wrote:
>
> Hi all
> I am new to flask and am writing a REST API backend for a mobile app. My
> question is how can I ensure that call to my endpoints is only being done
> by my mobile app and not by some one who has guessed the endpoint.
> What would be the best way to avoid this kind of behavior.
> Thanks
> *_______________________________________________*
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From saikat_sarkar at hotmail.com  Mon May 30 07:41:35 2016
From: saikat_sarkar at hotmail.com (saikat_sarkar)
Date: Mon, 30 May 2016 17:11:35 +0530
Subject: [Flask] Flask secret key for mobile app client
Message-ID: <BLU407-EAS137490EF005B0440BA5BFFD8D450@phx.gbl>

Stop this spam


Saikat
Sent from Samsung Mobile

-------- Original message --------
From: aiman parvaiz <aimanparvaiz at gmail.com>
Date:30/05/2016  1:16 PM  (GMT+05:30)
To: Unai Rodriguez <unai at sysbible.org>
Cc: flask at python.org
Subject: Re: [Flask] Flask secret key for mobile app client

The case under consideration is that right now any one can jump on a tool
as simple as Postman(on Chrome browser), construct the API call and get
data from the backend. I need a way to allow only mobile devices with the
installed app to see the returned data and how can I ensure that a API call
from any client other than mobile devices don't get a response from my
server.

I would appreciate any help I can get here.

Thanks

On Mon, May 30, 2016 at 12:07 AM, Aiman Parvaiz <aimanparvaiz at gmail.com>
wrote:

> Thanks for the response Unai. This app would be open to the general public
> indeed. Can you please throw more light on SSL+ authentication?
> I would be using SSL for this but what do you mean by authentication from
> mobile phone?
>
>
> Sent from my iPhone
>
> On May 29, 2016, at 9:09 PM, Unai Rodriguez <unai at sysbible.org> wrote:
>
> If the people using the app can be anyone (I.e. it's open to general
> public) you cannot. Typically SSL I.e. HTTPS) plus authentication is used
> for this.
>
> If the people that are supposed to access have something in common (I.e.
> they come from a specific office, etc) then you might be able to add rules
> on a firewalll. But that can be a problem (rules not correct or people
> accessing through a VPN etc). I guess the only way is if the app is served
> only to the people that are supposed to access the through some sort of a
> corporate /private network .
>
>
>
> -- unai
>
>
> On Mon, May 30, 2016, at 09:56 AM, aiman parvaiz wrote:
>
> Hi all
> I am new to flask and am writing a REST API backend for a mobile app. My
> question is how can I ensure that call to my endpoints is only being done
> by my mobile app and not by some one who has guessed the endpoint.
> What would be the best way to avoid this kind of behavior.
> Thanks
> *_______________________________________________*
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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_______________________________________________
Flask mailing list
Flask at python.org
https://mail.python.org/mailman/listinfo/flask

From coreybrett at gmail.com  Mon May 30 09:37:21 2016
From: coreybrett at gmail.com (Corey Boyle)
Date: Mon, 30 May 2016 09:37:21 -0400
Subject: [Flask] Flask secret key for mobile app client
In-Reply-To: <BLU407-EAS137490EF005B0440BA5BFFD8D450@phx.gbl>
References: <BLU407-EAS137490EF005B0440BA5BFFD8D450@phx.gbl>
Message-ID: <CAD=ssw3fgr3pHSEGFjW9LhGt2XprBFn-raq-_8TnhjyoMw1VWA@mail.gmail.com>

You can make it non-trivial for someone to access the back end directly,
but I don't think you can ever make it impossible. Any type of secret that
you embed in the application, could always be extracted.
On May 30, 2016 7:43 AM, "saikat_sarkar" <saikat_sarkar at hotmail.com> wrote:

> Stop this spam
>
>
> Saikat
> Sent from Samsung Mobile
>
>
> -------- Original message --------
> From: aiman parvaiz
> Date:30/05/2016 1:16 PM (GMT+05:30)
> To: Unai Rodriguez
> Cc: flask at python.org
> Subject: Re: [Flask] Flask secret key for mobile app client
>
> The case under consideration is that right now any one can jump on a tool
> as simple as Postman(on Chrome browser), construct the API call and get
> data from the backend. I need a way to allow only mobile devices with the
> installed app to see the returned data and how can I ensure that a API call
> from any client other than mobile devices don't get a response from my
> server.
>
> I would appreciate any help I can get here.
>
> Thanks
>
> On Mon, May 30, 2016 at 12:07 AM, Aiman Parvaiz <aimanparvaiz at gmail.com>
> wrote:
>
> Thanks for the response Unai. This app would be open to the general public
> indeed. Can you please throw more light on SSL+ authentication?
> I would be using SSL for this but what do you mean by authentication from
> mobile phone?
>
>
> Sent from my iPhone
>
> On May 29, 2016, at 9:09 PM, Unai Rodriguez <unai at sysbible.org> wrote:
>
> If the people using the app can be anyone (I.e. it's open to general
> public) you cannot. Typically SSL I.e. HTTPS) plus authentication is used
> for this.
>
> If the people that are supposed to access have something in common (I.e.
> they come from a specific office, etc) then you might be able to add rules
> on a firewalll. But that can be a problem (rules not correct or people
> accessing through a VPN etc). I guess the only way is if the app is served
> only to the people that are supposed to access the through some sort of a
> corporate /private network .
>
>
>
> -- unai
>
>
> On Mon, May 30, 2016, at 09:56 AM, aiman parvaiz wrote:
>
> Hi all
> I am new to flask and am writing a REST API backend for a mobile app. My
> question is how can I ensure that call to my endpoints is only being done
> by my mobile app and not by some one who has guessed the endpoint.
> What would be the best way to avoid this kind of behavior.
> Thanks
> *_______________________________________________*
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
>
> _______________________________________________
> Flask mailing list
> Flask at python.org
> https://mail.python.org/mailman/listinfo/flask
>
>
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From markus at unterwaditzer.net  Mon May 30 09:58:09 2016
From: markus at unterwaditzer.net (Markus Unterwaditzer)
Date: Mon, 30 May 2016 15:58:09 +0200
Subject: [Flask] Flask secret key for mobile app client
In-Reply-To: <BLU407-EAS137490EF005B0440BA5BFFD8D450@phx.gbl>
References: <BLU407-EAS137490EF005B0440BA5BFFD8D450@phx.gbl>
Message-ID: <DA6187F6-6934-4E9C-A712-2929808FF77A@unterwaditzer.net>

Then unsubscribe from this mailing list.

On 30 May 2016 13:41:35 CEST, saikat_sarkar <saikat_sarkar at hotmail.com> wrote:
>Stop this spam
>
>
>Saikat
>Sent from Samsung Mobile
>
>-------- Original message --------
>From: aiman parvaiz <aimanparvaiz at gmail.com>
>Date:30/05/2016  1:16 PM  (GMT+05:30)
>To: Unai Rodriguez <unai at sysbible.org>
>Cc: flask at python.org
>Subject: Re: [Flask] Flask secret key for mobile app client
>
>The case under consideration is that right now any one can jump on a
>tool
>as simple as Postman(on Chrome browser), construct the API call and get
>data from the backend. I need a way to allow only mobile devices with
>the
>installed app to see the returned data and how can I ensure that a API
>call
>from any client other than mobile devices don't get a response from my
>server.
>
>I would appreciate any help I can get here.
>
>Thanks
>
>On Mon, May 30, 2016 at 12:07 AM, Aiman Parvaiz
><aimanparvaiz at gmail.com>
>wrote:
>
>> Thanks for the response Unai. This app would be open to the general
>public
>> indeed. Can you please throw more light on SSL+ authentication?
>> I would be using SSL for this but what do you mean by authentication
>from
>> mobile phone?
>>
>>
>> Sent from my iPhone
>>
>> On May 29, 2016, at 9:09 PM, Unai Rodriguez <unai at sysbible.org>
>wrote:
>>
>> If the people using the app can be anyone (I.e. it's open to general
>> public) you cannot. Typically SSL I.e. HTTPS) plus authentication is
>used
>> for this.
>>
>> If the people that are supposed to access have something in common
>(I.e.
>> they come from a specific office, etc) then you might be able to add
>rules
>> on a firewalll. But that can be a problem (rules not correct or
>people
>> accessing through a VPN etc). I guess the only way is if the app is
>served
>> only to the people that are supposed to access the through some sort
>of a
>> corporate /private network .
>>
>>
>>
>> -- unai
>>
>>
>> On Mon, May 30, 2016, at 09:56 AM, aiman parvaiz wrote:
>>
>> Hi all
>> I am new to flask and am writing a REST API backend for a mobile app.
>My
>> question is how can I ensure that call to my endpoints is only being
>done
>> by my mobile app and not by some one who has guessed the endpoint.
>> What would be the best way to avoid this kind of behavior.
>> Thanks
>> *_______________________________________________*
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>>
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>
>
>------------------------------------------------------------------------
>
>_______________________________________________
>Flask mailing list
>Flask at python.org
>https://mail.python.org/mailman/listinfo/flask
>
>
>------------------------------------------------------------------------
>
>_______________________________________________
>Flask mailing list
>Flask at python.org
>https://mail.python.org/mailman/listinfo/flask

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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From aco at miza.org  Mon May 30 14:59:01 2016
From: aco at miza.org (Aco Strkalj)
Date: Mon, 30 May 2016 13:59:01 -0500
Subject: [Flask] Developers
Message-ID: <2F6A7CFC-0956-4544-B077-9E15CFDD7893@miza.org>

I?m looking for a highly skilled python developer with a master understanding of flask to build a web app related integrating python with transmission and ffmpeg and a bunch of data match making.  Work from home at your time, great pay. If interested, email me. Thanks! 

From luca at lesinigo.it  Tue May 31 04:16:23 2016
From: luca at lesinigo.it (Luca Lesinigo)
Date: Tue, 31 May 2016 10:16:23 +0200
Subject: [Flask] Flask secret key for mobile app client
In-Reply-To: <CANR1tAzFu23nYRzopk+_T4jwBsV-=ZM38OZVbekwwM=CZJ+B0A@mail.gmail.com>
References: <CANR1tAyOrTUViVRNr236xxGVtMFx1XJvWU270X+tCPoT_XuAoA@mail.gmail.com>
 <1464581378.1311398.622307097.45728CEA@webmail.messagingengine.com>
 <755EEE64-E942-45B7-9108-B1BFB227B27C@gmail.com>
 <CANR1tAzFu23nYRzopk+_T4jwBsV-=ZM38OZVbekwwM=CZJ+B0A@mail.gmail.com>
Message-ID: <07FB7617-6140-47D7-A6EC-6EB86F9EEFE9@lesinigo.it>

Il giorno 30 mag 2016, alle ore 09:46, aiman parvaiz <aimanparvaiz at gmail.com> ha scritto:
> The case under consideration is that right now any one can jump on a tool as simple as Postman(on Chrome browser), construct the API call and get data from the backend. I need a way to allow only mobile devices with the installed app to see the returned data and how can I ensure that a API call from any client other than mobile devices don't get a response from my server.
> I would appreciate any help I can get here.
First of all you have to put your API on an HTTPS endpoint.

You can then put a first layer of security by embedding the server public certificate in the mobile app (client).
This will gain you nothing for what you are asking (it is really easy for anyone to extract whatever they want from any public app) but your app can use certificate pinning to be sure it?s talking to the real server and not to someone else.
The trust to this certificate is enforced by the mobile operating system (i.e. iOS or Android) that under normal circumstances will refuse to run application not coming from the official app store and/or applications that have been tampered with.
Of course you can do nothing for people with rooted or otherwise modified mobile operating system, thay can always get a modified version of your app with a different certificate if they want or if someone maliciously do that.

Then you have to implement some sort of authentication for the users of your app: for example have the user fill a form including their email address and send a verification email to that address, or stuff like that.

Bottom line is:
- your server has no way to be sure if it?s talking to your genuine client app or to a modified version of it or to something entirely different. You must think of it just like any public-facing service (api, website, whatever) that doesn?t know who?s knocking at the door
- your client app can only be sure it?s talking to your genuine server if it is running on a genuine, unmodified and uncompromised mobile operating system that got the app from a trusted source like the official app store

--
Luca Lesinigo


From aimanparvaiz at gmail.com  Tue May 31 18:30:16 2016
From: aimanparvaiz at gmail.com (aiman parvaiz)
Date: Tue, 31 May 2016 15:30:16 -0700
Subject: [Flask] Flask secret key for mobile app client
In-Reply-To: <07FB7617-6140-47D7-A6EC-6EB86F9EEFE9@lesinigo.it>
References: <CANR1tAyOrTUViVRNr236xxGVtMFx1XJvWU270X+tCPoT_XuAoA@mail.gmail.com>
 <1464581378.1311398.622307097.45728CEA@webmail.messagingengine.com>
 <755EEE64-E942-45B7-9108-B1BFB227B27C@gmail.com>
 <CANR1tAzFu23nYRzopk+_T4jwBsV-=ZM38OZVbekwwM=CZJ+B0A@mail.gmail.com>
 <07FB7617-6140-47D7-A6EC-6EB86F9EEFE9@lesinigo.it>
Message-ID: <CANR1tAwqoa5p_t=Zn3anEcj=rAwHb-R2aEsVydZNfhZtpTW7_A@mail.gmail.com>

Thanks a lot Luca and others for all the advice. I would be using HTTPS for
sure, for authentication I want to use something like Flask Login so that I
can check if its a logged in user making a request or not. Does Flask Login
work with Android app's? I read the documentation and understand that does
user session management but being new in this domain am not sure if a
mobile app is a legit client for Flask login.



On Tue, May 31, 2016 at 1:16 AM, Luca Lesinigo <luca at lesinigo.it> wrote:

> Il giorno 30 mag 2016, alle ore 09:46, aiman parvaiz <
> aimanparvaiz at gmail.com> ha scritto:
> > The case under consideration is that right now any one can jump on a
> tool as simple as Postman(on Chrome browser), construct the API call and
> get data from the backend. I need a way to allow only mobile devices with
> the installed app to see the returned data and how can I ensure that a API
> call from any client other than mobile devices don't get a response from my
> server.
> > I would appreciate any help I can get here.
> First of all you have to put your API on an HTTPS endpoint.
>
> You can then put a first layer of security by embedding the server public
> certificate in the mobile app (client).
> This will gain you nothing for what you are asking (it is really easy for
> anyone to extract whatever they want from any public app) but your app can
> use certificate pinning to be sure it?s talking to the real server and not
> to someone else.
> The trust to this certificate is enforced by the mobile operating system
> (i.e. iOS or Android) that under normal circumstances will refuse to run
> application not coming from the official app store and/or applications that
> have been tampered with.
> Of course you can do nothing for people with rooted or otherwise modified
> mobile operating system, thay can always get a modified version of your app
> with a different certificate if they want or if someone maliciously do that.
>
> Then you have to implement some sort of authentication for the users of
> your app: for example have the user fill a form including their email
> address and send a verification email to that address, or stuff like that.
>
> Bottom line is:
> - your server has no way to be sure if it?s talking to your genuine client
> app or to a modified version of it or to something entirely different. You
> must think of it just like any public-facing service (api, website,
> whatever) that doesn?t know who?s knocking at the door
> - your client app can only be sure it?s talking to your genuine server if
> it is running on a genuine, unmodified and uncompromised mobile operating
> system that got the app from a trusted source like the official app store
>
> --
> Luca Lesinigo
>
>
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From nik.neusser at gmx.de  Fri May 20 11:05:22 2016
From: nik.neusser at gmx.de (Nikolaus Neusser)
Date: Fri, 20 May 2016 15:05:22 -0000
Subject: [Flask] Interchange data with main python application
Message-ID: <7fc87ce0-48ff-79e7-dd8b-6078b614c375@gmx.de>

Hi everyone,

I'm using flask for the first time and after trying quite a lot, i still fail. :-(
I am wondering what i am doing wrong and if flask is the right way to go at all.

My objective:
   - I have a main python application, which basically is based on a PySide (QT4) event loop. This runs a bigger 
state machine and several other functions.
   - Now, i want to add a web interface which reads/sets parameters and displays a longer list of strings from the 
main application (variable length) .

Where i am:
   - The simple flask examples from various tutorials work fine for me.
   - BUT: I cannot combine my main application with flask, i.e. i don't know how to interchange the data between my 
main application and the flask route-functions.

What i tried:
   - running flask in a thread (QThread). Works fine for a simple example, i.e. deliver static html and react on 
get-request
   - run flask in main thread. Doesn't work since some of my functions rely on the qt event loop
   - interchanging data between my main application and flask in the thread. I tried this using the qt signal/slot 
mechanism.
     This doesn't work, because the signals which i have to define in the main application are not accessible 
within the flask route-functions.


I really hope you can give me some good advice.
I can post code snippets if it helps for clarification.

Thanks a lot,


From wangjia at kiyes.cn  Mon May 23 04:28:49 2016
From: wangjia at kiyes.cn (wangjia at kiyes.cn)
Date: Mon, 23 May 2016 08:28:49 -0000
Subject: [Flask] about flask session expire problem
Message-ID: <201605231628255039599@kiyes.cn>

hi:
    I use nginx+uwsgi+flask(0.10.1) build environment , now i want to realize platform return to home page when user session expire , but i dont know how to setting , can you guide me?

thanks



Best Regards, 
Venture
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