On Sep 12, 2:57 pm, dadapapa <[EMAIL PROTECTED]> wrote:
> class BaseClass(models.Model) :
> final_type = models.ForeignKey(ContentType)
>
> def save(self,*args) :
> self.final_type =
> ContentType.objects.get_for_model(type(self))
> super(BaseClass,self)save(*args)
>
> def cast(self) :
> return
> self.final_type.get_object_for_this_type(id=self.id)
>
> class DerivedClass(ParentClass) :
> pass
Just ran into this issue myself (first time using non-abstract
inheritance). The catch with this recipe is that you can never save a
derived object from a parent instance, or you break the final_type
field (it will then contain the parent class content type).
Carl
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