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
7617	ModelFormMetaclass.__new__ is incompatible with metaclass mixins	Christian Tanzer <tanzer@…>	nobody	"I wanted to define a subclass of ModelFormMetaclass that also inherits from a mixin. Because __new__ has an additional parameter formfield_callback, the call of the mixin's __new__ fails.
In addition, ModelFormMetaclass.__new__ doesn't use super(...).__new__ in all cases.

I'll attach a patch fixing this."		closed	Forms	newforms-admin		fixed			Accepted	1	0	0	0	0	0