Fixed #29279 -- Added renderer argument to ModelForm.

django/forms/models.py

@@ -278,7 +278,8 @@ class ModelFormMetaclass(DeclarativeFieldsMetaclass):
 class BaseModelForm(BaseForm):
     def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,
                  initial=None, error_class=ErrorList, label_suffix=None,
-                 empty_permitted=False, instance=None, use_required_attribute=None):
+                 empty_permitted=False, instance=None, use_required_attribute=None,
+                 renderer=None):
         opts = self._meta
         if opts.model is None:
             raise ValueError('ModelForm has no model class specified.')
@@ -299,6 +300,7 @@ class BaseModelForm(BaseForm):
         super().__init__(
             data, files, auto_id, prefix, object_data, error_class,
             label_suffix, empty_permitted, use_required_attribute=use_required_attribute,
+            renderer=renderer,
         )
         for formfield in self.fields.values():
             apply_limit_choices_to_to_formfield(formfield)

tests/model_forms/tests.py

@@ -648,6 +648,10 @@ class ModelFormBaseTest(TestCase):
         m1 = mf1.save(commit=False)
         self.assertEqual(m1.mode, mode)
 
+    def test_renderer_kwarg(self):
+        custom = object()
+        self.assertIs(ProductForm(renderer=custom).renderer, custom)
+
     def test_default_splitdatetime_field(self):
         class PubForm(forms.ModelForm):
             datetime_published = forms.SplitDateTimeField(required=False)