Fixed #28051 -- Made migrations respect Index's name argument.

Thanks Marc Tamlyn for the report and Tim Graham for the review.

1 files changed, 2 insertions, 1 deletions

diff --git a/django/db/migrations/state.py b/django/db/migrations/state.py
index 5c30c4c8a1..bda077f318 100644
--- a/django/db/migrations/state.py
+++ b/django/db/migrations/state.py
@@ -446,7 +446,8 @@ class ModelState:
                 elif name == "indexes":
                     indexes = [idx.clone() for idx in model._meta.indexes]
                     for index in indexes:
-                        index.set_name_with_model(model)
+                        if not index.name:
+                            index.set_name_with_model(model)
                     options['indexes'] = indexes
                 else:
                     options[name] = model._meta.original_attrs[name]