Multiple Inheritance from PolymorphicModel?

[MiltosD]

class A(PolymorphicModel)

class B(PolymorphicModel)

class C(B)

class D(A, C)

When trying to make migrations for class D, I get the following
The field 'polymorphic_ctype' from parent model 'A' clashes with the field 'polymorphic_ctype' from parent model 'B'.

Is there any way to differentiate between those two?

[JackAtOmenApps]

Is there more to the error? Post the entire stack trace. I use the same setup in one of my apps, and have not encountered this.

[claudioap]

class Subscriptible(PolymorphicModel):
    subscribers = djm.ManyToManyField(User)

class Postable(PolymorphicModel):
    author = djm.ForeignKey(settings.AUTH_USER_MODEL)

class Answer(Postable, Subscriptible):
    pass

Answer: (models.E005) The field 'polymorphic_ctype' from parent model 'postable' clashes with the field 'polymorphic_ctype' from parent model 'subscriptible'.

Issue #429 could be relevant

[bckohan]

@MiltosD Multiple inheritance from concrete models does work in Django - you have to manually specify and deconflict the primary key field names.

django-polymorphic does not yet support multiple inheritance. There are a few issues to resolve (namely the ctype conflict you highlight) - but it is on the list. For now, you would need to make all but one parent abstract.