35 lines
928 B
Python
35 lines
928 B
Python
from .models import Sortable, SortableForeignKey
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def check_inheritance(obj):
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return issubclass(type(obj), Sortable)
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def get_is_sortable(objects):
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if objects:
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if check_inheritance(objects[0]):
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if objects.count() > 1:
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return True
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return False
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def is_self_referential(cls):
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cls_type = type(cls)
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sortable_subclass = check_inheritance(cls_type)
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# sortable_subclass = issubclass(cls_type, Sortable)
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sortable_foreign_key_subclass = issubclass(cls_type, SortableForeignKey)
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if sortable_foreign_key_subclass and not sortable_subclass:
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return True
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return False
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def check_model_is_sortable(cls):
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if cls:
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if check_inheritance(cls):
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if is_self_referential(cls):
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objects = cls.model.objects
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else:
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objects = cls.objects
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return get_is_sortable(objects.all())
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return False
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