[1.8.x] Fixed #25299 -- Fixed crash with ModelAdmin.list_display value that clashes with a model reverse accessor.

Backport of 9607a0404188bbe612f05216f5a82df26f4b4e80 from master

4 files changed, 25 insertions, 2 deletions

diff --git a/django/contrib/admin/utils.py b/django/contrib/admin/utils.py
index 619e9ad796..8ddba506b0 100644
--- a/django/contrib/admin/utils.py
+++ b/django/contrib/admin/utils.py
@@ -293,9 +293,14 @@ def _get_non_gfk_field(opts, name):
     """
     For historical reasons, the admin app relies on GenericForeignKeys as being
     "not found" by get_field(). This could likely be cleaned up.
+
+    Reverse relations should also be excluded as these aren't attributes of the
+    model (rather something like `foo_set`).
     """
     field = opts.get_field(name)
-    if field.is_relation and field.many_to_one and not field.related_model:
+    if (field.is_relation and
+            # Generic foreign keys OR reverse relations
+            ((field.many_to_one and not field.related_model) or field.one_to_many)):
         raise FieldDoesNotExist()
     return field
 
diff --git a/docs/releases/1.8.5.txt b/docs/releases/1.8.5.txt
index 3f1674b979..543e8824be 100644
--- a/docs/releases/1.8.5.txt
+++ b/docs/releases/1.8.5.txt
@@ -13,5 +13,9 @@ Bugfixes
   field that is both a foreign and primary key (:ticket:`24951`).
 
 * Fixed a migrations crash with ``GenericForeignKey`` (:ticket:`25040`).
+
 * Made ``translation.override()`` clear the overridden language when a
   translation isn't initially active (:ticket:`25295`).
+
+* Fixed crash when using a value in ``ModelAdmin.list_display`` that clashed
+  with a reverse field on the model (:ticket:`25299`).
diff --git a/tests/admin_views/admin.py b/tests/admin_views/admin.py
index 158f42ea67..b4e67f0a23 100644
--- a/tests/admin_views/admin.py
+++ b/tests/admin_views/admin.py
@@ -169,7 +169,11 @@ class ThingAdmin(admin.ModelAdmin):
 
 
 class InquisitionAdmin(admin.ModelAdmin):
-    list_display = ('leader', 'country', 'expected')
+    list_display = ('leader', 'country', 'expected', 'sketch')
+
+    def sketch(self, obj):
+        # A method with the same name as a reverse accessor.
+        return 'list-display-sketch'
 
 
 class SketchAdmin(admin.ModelAdmin):
diff --git a/tests/admin_views/tests.py b/tests/admin_views/tests.py
index b5dff27e6b..dd96715605 100644
--- a/tests/admin_views/tests.py
+++ b/tests/admin_views/tests.py
@@ -4230,6 +4230,16 @@ class RawIdFieldsTest(TestCase):
         self.assertNotContains(response2, "Kilbraken")
         self.assertContains(response2, "Palin")
 
+    def test_list_display_method_same_name_as_reverse_accessor(self):
+        """
+        Should be able to use a ModelAdmin method in list_display that has the
+        same name as a reverse model field ("sketch" in this case).
+        """
+        actor = Actor.objects.create(name="Palin", age=27)
+        Inquisition.objects.create(expected=True, leader=actor, country="England")
+        response = self.client.get(reverse('admin:admin_views_inquisition_changelist'))
+        self.assertContains(response, 'list-display-sketch')
+
 
 @override_settings(PASSWORD_HASHERS=('django.contrib.auth.hashers.SHA1PasswordHasher',),
     ROOT_URLCONF="admin_views.urls")