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Editing: utils.cpython-311.pyc
� �|�e� � �X � d dl mZ d dlmZ d d�Z edd� � Z d d�Zd d �Zd � ZdS ) � )� namedtuple)� RECURSIVE_RELATIONSHIP_CONSTANTNc �T � t | t � � r|| t k r|�|�t d� � �||fS d| v r/| � dd� � \ }}||� � � fS |�t d� � �|| � � � fS | j j | j j fS )z� Turn a model class or model reference string and return a model tuple. app_label and model_name are used to resolve the scope of recursive and unscoped model relationship. NzMapp_label and model_name must be provided to resolve recursive relationships.�.� zCapp_label must be provided to resolve unscoped model relationships.) � isinstance�strr � TypeError�split�lower�_meta� app_label� model_name)�modelr r s �G/usr/lib/python3/dist-packages/django/db/migrations/operations/utils.py�resolve_relationr s� � � �%�� � � (� �3� 3� 3�� �J�$6� �/�� � � �j�(� (� �%�<�<�$)�K�K��Q�$7�$7� !�I�z� �j� .� .� 0� 0�0� 0� � ��!�� � � �%�+�+�-�-�'�'� �;� �%�+�"8� 8�8� �FieldReferencez to throughc �: � |j }|sdS d}d}t |j g| �R � |k r*t |dd� � }|�|�d|v r |� |j s||v r||f}t |dd� � } | r$t | g| �R � |k r|j } |�| �|| v r|| f}|s|sdS t ||� � S )at Return either False or a FieldReference if `field` references provided context. False positives can be returned if `reference_field_name` is provided without `reference_field` because of the introspection limitation it incurs. This should not be an issue when this function is used to determine whether or not an optimization can take place. FN� to_fields�through)� remote_fieldr r �getattr� primary_key�through_fieldsr ) � model_tuple�field�reference_model_tuple�reference_field_name�reference_fieldr � references_to�references_throughr r r s r �field_referencesr# $ s � � �%�L� � ��u��M� ��� �*�9�[�9�9�9�=R�R�R��E�;��5�5� � � (� � � �Y� � �O�$;��?Z�$;� �I� -� -� )�9� 5�M��l�I�t�4�4�G�� @�#�G�:�k�:�:�:�>S�S�S�%�4�� � (� � "� �N� 2� 2�".��!?� � � � /� ��u� �-�);� <� <�<r � c # � K � | j � � � D ]=\ }}|j � � � D ] \ }}t |||g|�R � }|r||||fV � � �>dS )z� Generator of (model_state, name, field, reference) referencing provided context. If field_tuple is provided only references to this particular field of model_tuple will be generated. N)�models�items�fieldsr# )�stater � field_tuple�state_model_tuple� model_state�namer � references r �get_referencesr/ U s� � � � � +0�,�*<�*<�*>�*>� :� :�&��;�&�-�3�3�5�5� :� :�K�D�%�(�):�E�;�]�Q\�]�]�]�I�� :�!�4�� �9�9�9�9�� :�:� :r c �D � t t | ||� � d� � duS )z?Return whether `field_tuple` is referenced by any state models.N)�nextr/ )r) r r* s r �field_is_referencedr2 d s# � � ��u�k�;�?�?�� F� F�d� R�Rr )NN)r$ ) � collectionsr � django.db.models.fields.relatedr r r r# r/ r2 r$ r r �<module>r5 s� �� "� "� "� "� "� "� K� K� K� K� K� K�9� 9� 9� 9�6 �� ,�l�;�;�� �� .=� .=� .=� .=�b :� :� :� :� S� S� S� S� Sr
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