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
28645	AuthenticationForm's inactive user error isn't raised when using ModelBackend	Guilherme Junqueira	shangdahao	"Looking in file django.contrib.auth.forms

The class AuthenticationForm and clean method.

The inactive user never is raised, this happens because after Django 1.10 all users that is not active cannot authenticate, so self.user_chache is always be None for inactive users, even if has a correct user and pass.

So the code needed to be changed to raise the correct error for a user that is not active.

My stackoverflow thread about this:
https://stackoverflow.com/questions/46459258/how-to-inform-a-user-that-he-is-not-active-in-django-login-view/46459998#46459998
"	Bug	new	contrib.auth	3.1	Normal		2.1	Christoph Schwarzenberg	Accepted	0	0	0	0	0	0