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
16634	"""m2m_changed"" signals never gets fired from the admin site"	f3r-_-@…	nobody	"Well, dont know if this is a bug or if I've a concept error. But try to test it:

A simple generic test:


{{{
from django.dispatch import receiver
from django.db.models.signals import m2m_changed

@receiver(m2m_changed)
def test_handler(sender, instance, action, reverse, model, pk_set, **kwargs):
     import sys
     print>>sys.stderr, action
}}}


Add this snippet to your code and try to edit a model from the admin that contains a m2m relation. You can add or delete an object to the relationship. Then, you will see that the signal doesn't fire: S

Instead, if you do the same from a shell ... everything works fine.

Could anyone try it and confirm it is not a paranormal activity at my computer?

Thanks in advance."	Bug	closed	contrib.admin	1.3	Normal	duplicate	signals		Unreviewed	0	0	0	0	0	0