Re: overwrite field value in subclasses

Foo.myfield is 0, but when you created a new models.Field object in the abstract class, it did some deep magic. There's also Foo._meta.fields which has the old myfield in it. The only thing you can do is create a new myfield with default=0 and editable=False.

On Nov 23, 2012, at 8:40 AM, Emmanuel Jannetti wrote:

> Hi all,
>
> One piece of my model is as follow :
>
> class UpperAbstract(models.Model):
> CHOICE_A = 0
> CHOICE_B = 1
> CHOICE_C = 2
> myfield = models.PositiveSmallIntegerField(choices=((CHOICE_A,'A'),(CHOICE_B,"B"),(CHOICE_C,"C")),blank=False)
> class Meta:
> abstract = True
>
> class Foo(UpperAbstract):
> myfield = UpperAbstract.CHOICE_A
>
>
>
> I am expecting any instance of Foo being created, to have 'myfield' always and "automatically" set to UpperAbstract.CHOICE_A
> In my test the created object as null value and saving it is refused on IntegrityError because 'myfield' cannot be None
>
> thank in advance for any help.
> regards
>
> manu
>

Peter of the Norse
RahmCoff@Radio1190.org



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