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
12105	Admin querystring __isnull=False filter doesn't work	marcob	Gabriel Hurley	"If I use {{{ __isnull=False }}} with an admin querystring filter I always get a IS NULL query.
Try with:
{{{
   http://127.0.0.1:8000/admin/auth/user/?email__isnull=False

   http://127.0.0.1:8000/admin/auth/user/?email__isnull=True
}}}
You'll get same results.
I fixed with a tiny patch (attached):
{{{
            elif key.endswith('__isnull'):
                value = False if value.lower() == 'false' else Tru
}}}"		closed	contrib.admin	1.1		fixed	isnull filter		Accepted	1	0	0	0	0	0