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
23604	"Regression in allowing to handle M2M fields from the ""receiving end"" - follow up to #23329"	Emmanuelle Delescolle	nobody	"Up until Django 1.5.8 and Django 1.6.5 it was possible to have a ManyToMany field displayed in the admin on the ""receiving-end"" of the relationship with the ability to add new records.
Due to the restrictiveness of the new to_field_allowed method, one cannot open the popup for adding new records to the Model where the ManyToMany relationship is defined.

I realize this usage of the admin site is undocumented but, since the current code allows to perform that from the ""receiving-end"" of ForeignKey fields, IMHO it should also work for ManyToMany fields.

If the descriptions sounds too vague, see http://www.lasolution.be/blog/related-manytomanyfield-django-admin-site.html for a complete step-by-step explanation on how to reproduce."	Bug	closed	contrib.admin	1.7	Release blocker	fixed	to_field_allowed,M2M	Simon Charette	Accepted	1	1	0	0	1	0