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
21217	`ImageField` and `GenericForeignKey` shouldn't connect `(pre|post)_init` signals to abstract senders	Simon Charette	nobody	"Since `(pre|post)_init` is only sent by non abstract models (actually it is also sent when an abstract model is instantiated but one should not do that anyway) we should avoid polluting the associated signals registries with useless entries.

Attaching a patch with testcases making sure the changes didn't affect `ImageField` and `GenericForeignKey` inherited from abstract bases. The full test suite pass on Python 2.7 SQLite."	Cleanup/optimization	closed	Database layer (models, ORM)	dev	Normal	fixed			Ready for checkin	1	0	0	0	0	0