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
13383	Querysets should only allow the correct model types to be filtered against	Chris Beaven		"Here's a simple example of what is allowed at the moment. It seems that this should throw an exception for the last line: 
{{{
In [1]: from django.contrib.auth.models import *


In [3]: u = User.objects.all()[0]


In [5]: m = Message.objects.create(user=u, message='test')

In [6]: m.pk, u.pk
Out[6]: (1, 1)


In [10]: User.objects.filter(message=m)
Out[10]: [<User: chris_b>]

In [11]: User.objects.filter(message=u)
Out[11]: [<User: chris_b>]
}}}"	Bug	closed	Database layer (models, ORM)	dev	Normal	duplicate			Accepted	0	0	0	0	0	0