id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
21174	Transaction handling broken in related manager modification methods	Anssi Kääriäinen	nobody	"Some of the related manager methods do multiple data-modifying operations but do not use any transaction management at all. This is clearly broken. This isn't a regression, so isn't a release blocker for that reason. However, this is a potential data corruption issue, so might be nice to fix for 1.6, too.

I am not sure how to test this. Maybe post_delete/save signals could be used to force exceptions and thus rollback.

EDIT: Forgot to add that a patch for some problematic methods available in https://github.com/django/django/pull/1684."	Bug	closed	Database layer (models, ORM)	1.6-beta-1	Normal	fixed		loic@…	Accepted	1	0	0	0	0	0