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Fixed #22217 - ManyToManyField.through_fields fixes.

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- Docs description of arguments mix up.
- Keep it from erroneously masking E332 check.
- Add checks E338 and E339, tweak message of E337.
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Akis Kesoglou 2014-03-07 13:56:28 +02:00 • committed by Ramiro Morales
parent f4d91638fc
commit aaad3e27ac
5 changed files with 154 additions and 49 deletions
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4
docs/topics/db/models.txt
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@ -440,12 +440,12 @@ explicit declaration defines how the two models are related.
There are a few restrictions on the intermediate model:
* Your intermediate model must contain one - and *only* one - foreign key
to the target model (this would be ``Person`` in our example), or you must
to the source model (this would be ``Group`` in our example), or you must
explicitly specify the foreign keys Django should use for the relationship
using :attr:`ManyToManyField.through_fields <ManyToManyField.through_fields>`.
If you have more than one foreign key and ``through_fields`` is not
specified, a validation error will be raised. A similar restriction applies
to the foreign key to the source model (this would be ``Group`` in our
to the foreign key to the target model (this would be ``Person`` in our
example).
* For a model which has a many-to-many relationship to itself through an