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20 lines
578 B
Python
20 lines
578 B
Python
from django.contrib.contenttypes.models import ContentType
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def all_subclasses(cls):
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return set(cls.__subclasses__()).union(
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[s for c in cls.__subclasses__() for s in all_subclasses(c)]
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)
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class SubclassesMixin:
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@classmethod
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def get_subclasses(cls):
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content_types = ContentType.objects.filter(app_label=cls._meta.app_label)
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models = [ct.model_class() for ct in content_types]
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return [
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model
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for model in models
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if (model is not None and issubclass(model, cls) and model is not cls)
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]
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