Fixed #26114 -- Fixed AlterModelTable.describe() if db_table is None.

2 files changed, 11 insertions, 1 deletions

diff --git a/django/db/migrations/operations/models.py b/django/db/migrations/operations/models.py
index b929367bce..8f311b32ea 100644
--- a/django/db/migrations/operations/models.py
+++ b/django/db/migrations/operations/models.py
@@ -465,7 +465,10 @@ class AlterModelTable(ModelOperation):
         return self.database_forwards(app_label, schema_editor, from_state, to_state)
 
     def describe(self):
-        return "Rename table for %s to %s" % (self.name, self.table)
+        return "Rename table for %s to %s" % (
+            self.name,
+            self.table if self.table is not None else "(default)"
+        )
 
     def reduce(self, operation, in_between, app_label=None):
         if isinstance(operation, (AlterModelTable, DeleteModel)) and self.name_lower == operation.name_lower:
diff --git a/tests/migrations/test_operations.py b/tests/migrations/test_operations.py
index 743bcd81a4..86e58cc3e6 100644
--- a/tests/migrations/test_operations.py
+++ b/tests/migrations/test_operations.py
@@ -1154,6 +1154,13 @@ class OperationTests(OperationTestBase):
         self.assertEqual(definition[1], [])
         self.assertEqual(definition[2], {'name': "Pony", 'table': "test_almota_pony_2"})
 
+    def test_alter_model_table_none(self):
+        """
+        Tests the AlterModelTable operation if the table name is set to None.
+        """
+        operation = migrations.AlterModelTable("Pony", None)
+        self.assertEqual(operation.describe(), "Rename table for Pony to (default)")
+
     def test_alter_model_table_noop(self):
         """
         Tests the AlterModelTable operation if the table name is not changed.