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
21391	Allow model signal sender to be specified lazily	Simon Charette	nobody	"With the introduction of the swappable User model [https://groups.google.com/forum/#!topic/django-developers/rT8NlPgciqw there is no sane way for a third party application to connect signals to it].

Hence I propose to make the `Signal.connect` method of model signals (`pre|post_init`, `pre|post_save`, `pre|post_delete`,  `m2m_changed`) accept a model name (`'app_label.ModelName'`) as its `sender` argument.

This should allow third party application to connect signals to the swappable user model by referring to it using `settings.AUTH_USER_MODEL` and is consistent with the suggest way of referring to it as the target of related fields.

Will be attaching a POC with missing documentation."	New feature	closed	Database layer (models, ORM)	dev	Normal	fixed			Accepted	1	0	0	0	0	0