[1.2.X] Fixed #14144 -- Made sure custom validators are called in ModelMultipleChoiceFields. Thanks, matiasb.

Backport from trunk (r14886).

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14906 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/forms/models.py

@@ -1035,6 +1035,9 @@ class ModelMultipleChoiceField(ModelChoiceField):
         for val in value:
             if force_unicode(val) not in pks:
                 raise ValidationError(self.error_messages['invalid_choice'] % val)
+        # Since this overrides the inherited ModelChoiceField.clean
+        # we run custom validators here
+        self.run_validators(value)
         return qs
 
     def prepare_value(self, value):

tests/regressiontests/model_forms_regress/tests.py

@@ -31,6 +31,22 @@ class ModelMultipleChoiceFieldTests(TestCase):
         selected = f.clean([1, 3, 5, 7, 9])
         self.assertEquals(len(db.connection.queries), 1)
 
+    def test_model_multiple_choice_run_validators(self):
+        """
+        Test that ModelMultipleChoiceField run given validators (#14144).
+        """
+        for i in range(30):
+            Person.objects.create(name="Person %s" % i)
+
+        self._validator_run = False
+        def my_validator(value):
+            self._validator_run = True
+
+        f = forms.ModelMultipleChoiceField(queryset=Person.objects.all(),
+                                           validators=[my_validator])
+        f.clean([1,2])
+        self.assertTrue(self._validator_run)
+
 class TripleForm(forms.ModelForm):
     class Meta:
         model = Triple