[1.9.x] Fixed #25609 -- Fixed regression in related field nested lookup error.

Backport of 32ef48aa562e6aaee9983f5d0f1c60f02fd555fb from master

1 files changed, 6 insertions, 0 deletions

diff --git a/tests/lookup/tests.py b/tests/lookup/tests.py
index 49c6f7101e..0954d24f34 100644
--- a/tests/lookup/tests.py
+++ b/tests/lookup/tests.py
@@ -493,6 +493,12 @@ class LookupTests(TestCase):
                 str(ex), "Unsupported lookup 'starts' for CharField "
                 "or join on the field not permitted.")
 
+    def test_relation_nested_lookup_error(self):
+        # An invalid nested lookup on a related field raises a useful error.
+        msg = 'Related Field got invalid lookup: editor'
+        with self.assertRaisesMessage(FieldError, msg):
+            Article.objects.filter(author__editor__name='James')
+
     def test_regex(self):
         # Create some articles with a bit more interesting headlines for testing field lookups:
         for a in Article.objects.all():