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Fixed #14481 -- Documented implicit "through" class created by ManyToManyField.

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Thanks to jonathanmorgan for the report and initial patch.
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Jorge C. Leitão 2014-06-16 21:30:26 +02:00 committed by Tim Graham
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commit de90129070
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docs/ref/models/fields.txt
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@ -1342,6 +1342,19 @@ that control how the relationship functions.
:ref:`extra data with a many-to-many relationship
<intermediary-manytomany>`.
If you don't specify an explicit ``through`` model, there is still an
implicit ``through`` model class you can use to directly access the table
created to hold the association. It has three fields:
* ``id``: the primary key of the relation.
* ``<containing_model>_id``: the ``id`` of the model that declares the
``ManyToManyField``.
* ``<other_model>_id``: the ``id`` of the model that the
``ManyToManyField`` points to.
This class can be used to query associated records for a given model
instance like a normal model.
.. attribute:: ManyToManyField.through_fields
.. versionadded:: 1.7