[1.4.x] Fixed #23329 -- Allowed inherited and m2m fields to be referenced in the admin.

Thanks to Trac alias Markush2010 and ross for the detailed reports.

Backport of 3cbb759 from master

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/regressiontests/admin_views/models.py b/tests/regressiontests/admin_views/models.py
index e158e07603..6380abd0a9 100644
--- a/tests/regressiontests/admin_views/models.py
+++ b/tests/regressiontests/admin_views/models.py
@@ -607,3 +607,21 @@ class UnorderedObject(models.Model):
     """
     name = models.CharField(max_length=255)
     bool = models.BooleanField(default=True)
+
+
+# Models for #23329
+class ReferencedByParent(models.Model):
+    pass
+
+
+class ParentWithFK(models.Model):
+    fk = models.ForeignKey(ReferencedByParent)
+
+
+class ChildOfReferer(ParentWithFK):
+    pass
+
+
+class M2MReference(models.Model):
+    ref = models.ManyToManyField('self')
+