[Flask] Logging from non-flask objects

[Guy Matz]

Thanks!  So I tried something like this:

from flask import current_app
class MyObject:
  def __init__(self):
    self.logger = current_app.logger
    self.logger.info('sdfdf")

And now I'm getting something like this:
ERROR/MainProcess] Task
main.async_process_on_startup[27608e0c-c9a5-4ef0-ac47-244759acd465] raised
unexpected: RuntimeError('Working outside of application context.\n\nThis
typically means that you attempted to use functionality that needed\nto
interface with the current application object in a way.  To solve\nthis set
up an application context with app.app_context().  See the\ndocumentation
for more information.',)

Any idea what I did wrong?

Thanks again!!

On Fri, Jul 8, 2016 at 5:49 AM, Ziirish <ziirish at ziirish.info> wrote:

> Hello,
>
> As usual, there is more than one way to do it.
> I don't know what is the best way to do it though so here are a few
> examples.
>
> 1. Use the current_app object. In the module defining your object you can
> do
> this:
>
> from flask import current_app
>
> class MyObject:
>     def foo(self):
>         current_app.logger.info('bar')
>
>
> 2. Like you suggested, you could pass to your object the flask app (that's
> basically what most of the flask extensions do):
>
> class MyObject:
>     def __init__(self, app=None):
>         self.app = app
>
>     def init_app(self, app):
>         self.app = app
>
>     def foo(self):
>         self.app.logger.info('bar')
>
>
> There are probably other ways but those are the two most common IMHO.
>
>
> * On Thursday, July 07, 2016 at 05:27 PM -0400, Guy Matz <
> guymatz at gmail.com> wrote:
> > Hi!  Can anyone recommend a way to log from objects that are not flask
> > objects?  I.e. if my flask code creates a new object that does some
> > processing, etc., how can I get access to the logger from that object?
> Do
> > I need to pass in the logger to the new object?  Or is there a better
> way?
> >
> > Thanks!
> > Guy
>
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