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
33641	The many to many model does not use the full routing function	wang	nobody	"In the many to many model, read-write separation is not supported

file: django/db/models/fields/related_descriptors.py
lines: 744, 1000

changed: 
    744: old_objs = set(self.using(router.db_for_read(self.model)).all())
    1000: old_ids = set(self.using(router.db_for_read(self.model)).values_list(self.target_field.target_field.attname, flat=True))


"	New feature	closed	Database layer (models, ORM)	4.0	Normal	needsinfo	router		Unreviewed	0	0	0	0	0	0