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- from django.contrib.contenttypes.models import ContentType
-
-
- def get_polymorphic_base_content_type(obj):
- """
- Helper function to return the base polymorphic content type id. This should used with django-guardian and the
- GUARDIAN_GET_CONTENT_TYPE option.
-
- See the django-guardian documentation for more information:
-
- https://django-guardian.readthedocs.io/en/latest/configuration.html#guardian-get-content-type
- """
- if hasattr(obj, "polymorphic_model_marker"):
- try:
- superclasses = list(obj.__class__.mro())
- except TypeError:
- # obj is an object so mro() need to be called with the obj.
- superclasses = list(obj.__class__.mro(obj))
-
- polymorphic_superclasses = list()
- for sclass in superclasses:
- if hasattr(sclass, "polymorphic_model_marker"):
- polymorphic_superclasses.append(sclass)
-
- # PolymorphicMPTT adds an additional class between polymorphic and base class.
- if hasattr(obj, "can_have_children"):
- root_polymorphic_class = polymorphic_superclasses[-3]
- else:
- root_polymorphic_class = polymorphic_superclasses[-2]
- ctype = ContentType.objects.get_for_model(root_polymorphic_class)
-
- else:
- ctype = ContentType.objects.get_for_model(obj)
-
- return ctype
|
