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
22808	ModelMultipleChoiceField does not properly check if value is valid	mattias.lindvall@…	Niclas Olofsson	"ModelMultipleChoiceField does try to check if value is valid by doing a query here: https://github.com/django/django/blob/stable/1.6.x/django/forms/models.py#L1185

However, it only cathes ValueError, assuming that filter() is capable of even using the value.
If the value is a weird data type like list or dict, the call to filter throws TypeError.
ModelMultipleChoiceField.clean should catch TypeError, in addition to ValueError, on line 1187.

Here is gist with a complete minimal app that demonstrates how this can happen: https://gist.github.com/thnee/8e7c6b22f350582efe57/
Specifically the file: 4. views.py.

It is tested with 1.6.5, using 100% default settings in a clean test project."	Bug	closed	Forms	1.6	Normal	fixed	modelform, afraid-to-commit	maxime.turcotte@…	Accepted	1	0	0	0	1	0