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
21461	Add pre_update and post_update signals	loic84		"Quoting Anssi from the ML post https://groups.google.com/forum/#!msg/django-developers/tCzFMpBm5-c/XLHFY0awVJ8J:

The idea is that pre_update listeners get a queryset that isn't executed. Accessing that queryset might be costly, but if it isn't accessed, there isn't much cost of adding a pre_update signals. For post_update the signal handler would be given a list of PK values (the original queryset doesn't work for post_update, the update might cause different instances to be returned than was updated, consider qs.filter(deleted=False).update(deleted=True))

This feature will also provide an upgrade path for #21169 (for FK RelatedManager.remove() more specifically)."	New feature	new	Database layer (models, ORM)	dev	Normal			Simon Charette Shai Berger Ben Davis Sardorbek Imomaliev Olivier Dalang Ülgen Sarıkavak	Accepted	1	0	0	1	0	0