Use TypedChoiceField for polymorphic_ctype field

Fixes #412
jazzband · Nov 18, 2021 · 5191989 · 5191989
1 parent 611aa7b
commit 5191989
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/polymorphic/formsets/models.py b/polymorphic/formsets/models.py
@@ -229,8 +229,8 @@ def add_fields(self, form, index):
             form._meta.model, for_concrete_model=False
         )
         choices = [(ct.pk, ct)]  # Single choice, existing forms can't change the value.
-        form.fields["polymorphic_ctype"] = forms.ChoiceField(
-            choices=choices, initial=ct.pk, required=False, widget=forms.HiddenInput
+        form.fields["polymorphic_ctype"] = forms.TypedChoiceField(
+            choices=choices, initial=ct.pk, required=False, widget=forms.HiddenInput, coerce=int,
         )
         super(BasePolymorphicModelFormSet, self).add_fields(form, index)