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Simon Charette b40a1d774d [2.0.x] Fixed #28884 -- Fixed crash on SQLite when renaming a field in a model referenced by a ManyToManyField.
Introspected database constraints instead of relying on _meta.related_objects
to determine whether or not a table or a column is referenced on rename
operations.

This has the side effect of ignoring both db_constraint=False and virtual
fields such as GenericRelation which aren't backend by database level
constraints and thus shouldn't prevent the rename operations from being
performed in a transaction.

Regression in 095c1aaa898bed40568009db836aa8434f1b983d.

Thanks Tim for the additional tests and edits, and Mariusz for the review.

Backport of 9f7772e098439f9edea3d25ab127539fc514eeb2 from master
2017-12-22 16:09:49 -05:00
..
2017-06-01 13:23:48 -04:00
2017-06-21 12:00:47 -04:00

To run the test suite, first, create and activate a virtual environment. Then
install some requirements and run the tests::

    $ cd tests
    $ pip install -e ..
    $ pip install -r requirements/py3.txt
    $ ./runtests.py

For more information about the test suite, see
https://docs.djangoproject.com/en/dev/internals/contributing/writing-code/unit-tests/.