Re: Multiple model inheritance

I'm not sure that's possible. Even abstract Models do magic in the background. Specifically there's the _meta class attribute that gets inherited. If you were to try it, only one of the _metas would be included.

On Dec 31, 2012, at 6:12 AM, Mattias Linnap wrote:

> Hi all,
>
> I would like to define multiple abstract base models with small set of
> fields each. The "real" models inherit from multiple mixins to add the
> fields.
>
> For example:
> class Taggable(?):
> tag = models.CharField()
> class Visible(?):
> visible = models.BooleanField()
> class SomeFullModel(?, Taggable, Visible):
> otherfield = models.CharField()
>
> With this use case:
> * should the abstract models inherit from models.Model, or be a plain
> Python class inheriting from object?
> * should all or any of the abstract models have a class Meta with
> abstract=True?
> * should the final real model inherit from models.Model (probably
> required if all the mixins are plain classes), or inherit from the
> first mixin that is an abstract model?
> * does the order of the base classes in SomeFullModel matter?
>
> Thanks,
>
> Mattias
>
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Peter of the Norse
RahmCoff@Radio1190.org



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