Fix compatibility with django-polymorphic 4.6 #279
+1
−1
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Replaces private
_get_inheritance_relation_fields_and_models()API withDjango's public
model._meta.parents.keys().Context
django-polymorphic 4.6 removed/changed the private method this code depended on.
See: jazzband/django-polymorphic@v4.5.1...v4.6.0
Related issue: #278