Fixed #37139 -- Fixed inlines crash on parent models with db_default on primary key.

2 files changed, 35 insertions, 1 deletions

diff --git a/tests/inline_formsets/models.py b/tests/inline_formsets/models.py
index a090387c42..ccada27e4c 100644
--- a/tests/inline_formsets/models.py
+++ b/tests/inline_formsets/models.py
@@ -1,4 +1,5 @@
 from django.db import models
+from django.db.models.functions import UUID4
 
 
 class School(models.Model):
@@ -21,6 +22,27 @@ class Child(models.Model):
         ]
 
 
+class ParentUUIDPk(models.Model):
+    uuid = models.UUIDField(primary_key=True, db_default=UUID4(), editable=False)
+
+    class Meta:
+        required_db_features = {
+            "supports_uuid4_function",
+            "supports_expression_defaults",
+        }
+
+
+class ChildUUIDPk(models.Model):
+    parent = models.ForeignKey(ParentUUIDPk, models.CASCADE)
+    name = models.CharField(max_length=100)
+
+    class Meta:
+        required_db_features = {
+            "supports_uuid4_function",
+            "supports_expression_defaults",
+        }
+
+
 class Poet(models.Model):
     name = models.CharField(max_length=100)
 
diff --git a/tests/inline_formsets/tests.py b/tests/inline_formsets/tests.py
index eaabc350b4..78456ec514 100644
--- a/tests/inline_formsets/tests.py
+++ b/tests/inline_formsets/tests.py
@@ -1,7 +1,7 @@
 from django.forms.models import ModelForm, inlineformset_factory
 from django.test import TestCase, skipUnlessDBFeature
 
-from .models import Child, Parent, Poem, Poet, School
+from .models import Child, ChildUUIDPk, Parent, ParentUUIDPk, Poem, Poet, School
 
 
 class DeletionTests(TestCase):
@@ -113,6 +113,18 @@ class DeletionTests(TestCase):
             obj.save()
         self.assertEqual(school.child_set.count(), 1)
 
+    @skipUnlessDBFeature("supports_uuid4_function", "supports_expression_defaults")
+    def test_add_form_uuid_pk(self):
+        ChildFormSet = inlineformset_factory(ParentUUIDPk, ChildUUIDPk, fields=["name"])
+        data = {
+            "child_set-TOTAL_FORMS": "1",
+            "child_set-INITIAL_FORMS": "1",
+            "child_set-MAX_NUM_FORMS": "0",
+            "child_set-0-name": "child",
+        }
+        formset = ChildFormSet(data)
+        self.assertIs(formset.is_valid(), False)
+
 
 class InlineFormsetFactoryTest(TestCase):
     def test_inline_formset_factory(self):