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
27654	Propogate alters_data value to subclasses	vinay karanam	nobody	"Current implementation to prevent data changes within templates relies on the attribute alters_data = True.

By default this is set for all Model, QuerySet and ModelForm methods that can alter data.

But if someone overrides these methods, they need to explicitly set this attribute again.
It is common to override save method and not set this attribute.

Even a lot of popular third-party packages end up making this mistake.

These classes need to make sure that the attribute value is set for their subclasses methods if not explicitly overwritten."	Cleanup/optimization	closed	Core (Other)	dev	Normal	fixed			Ready for checkin	1	0	0	0	0	0