[1.11.x] Fixed #28282 -- Fixed class-based indexes name for models that only inherit Model.

Backport of 0c3c37a376bac149fe7e7e4b2696f8fb7990e2ab from master

2 files changed, 7 insertions, 0 deletions

diff --git a/tests/model_indexes/models.py b/tests/model_indexes/models.py
index 34b3f3246c..6d74ad8fa6 100644
--- a/tests/model_indexes/models.py
+++ b/tests/model_indexes/models.py
@@ -6,6 +6,9 @@ class Book(models.Model):
     author = models.CharField(max_length=50)
     pages = models.IntegerField(db_column='page_count')
 
+    class Meta:
+        indexes = [models.indexes.Index(fields=['title'])]
+
 
 class AbstractModel(models.Model):
     name = models.CharField(max_length=50)
diff --git a/tests/model_indexes/tests.py b/tests/model_indexes/tests.py
index 791233daf0..c0f5a84fdb 100644
--- a/tests/model_indexes/tests.py
+++ b/tests/model_indexes/tests.py
@@ -83,6 +83,10 @@ class IndexesTests(SimpleTestCase):
         self.assertIsNot(index, new_index)
         self.assertEqual(index.fields, new_index.fields)
 
+    def test_name_set(self):
+        index_names = [index.name for index in Book._meta.indexes]
+        self.assertEqual(index_names, ['model_index_title_196f42_idx'])
+
     def test_abstract_children(self):
         index_names = [index.name for index in ChildModel1._meta.indexes]
         self.assertEqual(index_names, ['model_index_name_440998_idx'])