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- def is_referenced_by_foreign_key(state, model_name_lower, field, field_name):
- for state_app_label, state_model in state.models:
- for _, f in state.models[state_app_label, state_model].fields:
- if (f.related_model and
- '%s.%s' % (state_app_label, model_name_lower) == f.related_model.lower() and
- hasattr(f, 'to_fields')):
- if (f.to_fields[0] is None and field.primary_key) or field_name in f.to_fields:
- return True
- return False
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