[Tutor] model methods in Django

[Dave Angel]

On 05/18/2013 03:16 PM, Matthew Ngaha wrote:
>   im following the official docs and after learning Python im sure of
> how methods work, but the model example on the beginners guide

which official docs?  URLs please?
which beginners guide?  URL please?

> has me
> really confused.
>

I don't know Django, so if this is really Django specific, I can't help.

> The model definition is omitted but can anyone explain how this methed
> (was_published_recently) is given these attributes:

Which attributes are you confused about?
The admin_order_field, boolean, ande short_description attributes of the 
method are bound in class code, immediately after the method is defined.

The pub_date is probably an instance attribute of either the Poll class 
or the models.Model class.  It should probably be defined in the 
appropriate __init__ method.  In any case it's not a method attribute.

>
> class Poll(models.Model):
>      # ...
>      def was_published_recently(self):
>          return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
>      was_published_recently.admin_order_field = 'pub_date'
>      was_published_recently.boolean = True
>      was_published_recently.short_description = 'Published recently?'
>
> are the names of the attributes already attached to these
> functions/methods, or are they being created on the fly with whatever
> name you want? As i am unable to comprehend what is going on, i dont
> really have a clue as to what each definition is doing and how it
> affects the model, even after reading this section of the docs over
> and over again im still lost.
>

This fragment isn't big enough for much else to be told.  But I don't 
really understand what aspect is confusing you.

Perhaps you didn't realize that a function can have attributes, and that 
they can be added to the function at any time after the function is 
created. Being a method doesn't change that.


-- 
DaveA