Fixed #23076, #25505 -- Fixed deletion of intermediate proxy models.

Thanks to James Murty for his work on an alternate patch.

1 files changed, 1 insertions, 1 deletions

diff --git a/django/db/models/deletion.py b/django/db/models/deletion.py
index 831e3c03db..76a2d35890 100644
--- a/django/db/models/deletion.py
+++ b/django/db/models/deletion.py
@@ -55,7 +55,7 @@ def get_candidate_relations_to_delete(opts):
     # The candidate relations are the ones that come from N-1 and 1-1 relations.
     # N-N  (i.e., many-to-many) relations aren't candidates for deletion.
     return (
-        f for f in opts.get_fields(include_hidden=True)
+        f for f in opts.concrete_model._meta.get_fields(include_hidden=True)
         if f.auto_created and not f.concrete and (f.one_to_one or f.one_to_many)
     )