Fixed #36260 -- Made bulk_create() work with DB-generated primary keys.

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

2 files changed, 11 insertions, 0 deletions

diff --git a/tests/bulk_create/models.py b/tests/bulk_create/models.py
index f0df9da66e..4b74b7ef56 100644
--- a/tests/bulk_create/models.py
+++ b/tests/bulk_create/models.py
@@ -147,3 +147,7 @@ class RelatedModel(models.Model):
 class DbDefaultModel(models.Model):
     name = models.CharField(max_length=10)
     created_at = models.DateTimeField(db_default=Now())
+
+
+class DbDefaultPrimaryKey(models.Model):
+    id = models.DateTimeField(primary_key=True, db_default=Now())
diff --git a/tests/bulk_create/tests.py b/tests/bulk_create/tests.py
index 83ff8e4514..9bcf92e4cf 100644
--- a/tests/bulk_create/tests.py
+++ b/tests/bulk_create/tests.py
@@ -1,3 +1,4 @@
+from datetime import datetime
 from math import ceil
 from operator import attrgetter
 
@@ -23,6 +24,7 @@ from .models import (
     BigAutoFieldModel,
     Country,
     DbDefaultModel,
+    DbDefaultPrimaryKey,
     FieldsWithDbColumns,
     NoFields,
     NullableFields,
@@ -866,3 +868,8 @@ class BulkCreateTests(TestCase):
             ctx[0]["sql"].count(created_at_quoted_name),
             2 if connection.features.can_return_rows_from_bulk_insert else 1,
         )
+
+    @skipUnlessDBFeature("can_return_rows_from_bulk_insert")
+    def test_db_default_primary_key(self):
+        (obj,) = DbDefaultPrimaryKey.objects.bulk_create([DbDefaultPrimaryKey()])
+        self.assertIsInstance(obj.id, datetime)