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
24227	isinstance checks on ForeignKey/ManyToManyField should be replaced with field.many_to_one/field.many_to_many	Andriy Sokolovskiy		"`\bisinstance\b\([a-zA-Z._-]*.\s[a-zA-Z.]*?\bManyToManyField\b` gives me 15 occurrences (I will check manually too).

As a followup to https://code.djangoproject.com/ticket/24104, it might be good to check and replace (where we can do this) to look more cleaner and allow custom m2m-fields to behave in the same way like original `ManyToManyField` do."	Cleanup/optimization	new	Database layer (models, ORM)	dev	Normal			cmawebsite@… Markus Holtermann	Accepted	1	0	0	1	0	0