#28884: RenameField crashes with AttributeError when renaming a ManyToManyField
(sqlite3)
-------------------------------------+-------------------------------------
Reporter: Emanuele Di Giacomo | Owner: Simon
| Charette
Type: Bug | Status: closed
Component: Migrations | Version: 2.0
Severity: Release blocker | Resolution: fixed
Keywords: sqlite3 sqlite | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Tim Graham <timograham@…>):
In [changeset:"b40a1d774d6e7dc0a3663a69c3a8a9b8793d31ff" b40a1d7]:
{{{
#!CommitTicketReference repository=""
revision="b40a1d774d6e7dc0a3663a69c3a8a9b8793d31ff"
[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
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/28884#comment:6>
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