Fixed #35676 -- Made BaseModelForm validate constraints that reference an InlineForeignKeyField.

Co-authored-by: Simon Charette <charette.s@gmail.com>

tests/model_forms/models.py

@@ -521,3 +521,24 @@ class Dice(models.Model):
         through=NumbersToDice,
         limit_choices_to=models.Q(value__gte=1),
     )
+
+
+class ConstraintsModel(models.Model):
+    name = models.CharField(max_length=100)
+    category = models.CharField(max_length=50, default="uncategorized")
+    price = models.DecimalField(max_digits=10, decimal_places=2, default=0)
+
+    class Meta:
+        constraints = [
+            models.UniqueConstraint(
+                "name",
+                "category",
+                name="unique_name_category",
+                violation_error_message="This product already exists.",
+            ),
+            models.CheckConstraint(
+                condition=models.Q(price__gt=0),
+                name="price_gte_zero",
+                violation_error_message="Price must be greater than zero.",
+            ),
+        ]