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
25981	Document the necessity to add on_delete param to old migrations	karyon	Luis San Pablo	"When going through the deprecation warnings i got when updating to django 1.9, i was surprised to find out that even after adding on_delete to all ForeignKeys i had and adding the according migration, the old migrations still threw those errors.

Apparently (see [https://github.com/django/django/pull/5026#issuecomment-124169128 PR] i'm supposed to edit old migrations. i think this is something that should go into the docs (release notes?), as i was pretty surprised by that and found the ""solution"" only after digging until i got to the PR."	Cleanup/optimization	closed	Documentation	1.9	Normal	fixed			Accepted	1	0	0	0	1	0