From a845eba8dded42a58d5b42bcb087b3f4bc65a26e Mon Sep 17 00:00:00 2001
From: Jannis Leidel <jannis@leidel.info>
Date: Fri, 22 Apr 2011 12:02:07 +0000
Subject: [PATCH] Fixed #11283 -- Made sure that latest() clears previously
 specified ordering in a QuerySet. Thanks to benmoran, punteney, mk and and
 Julien Phalip.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16067 bcc190cf-cafb-0310-a4f2-bffc1f526a37
---
 django/db/models/query.py            | 1 +
 tests/modeltests/get_latest/tests.py | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/django/db/models/query.py b/django/db/models/query.py
index 8e33765fdf..09d960b3ec 100644
--- a/django/db/models/query.py
+++ b/django/db/models/query.py
@@ -403,6 +403,7 @@ class QuerySet(object):
                 "Cannot change a query once a slice has been taken."
         obj = self._clone()
         obj.query.set_limits(high=1)
+        obj.query.clear_ordering()
         obj.query.add_ordering('-%s' % latest_by)
         return obj.get()
 
diff --git a/tests/modeltests/get_latest/tests.py b/tests/modeltests/get_latest/tests.py
index 3c3588bba0..97cd22bf91 100644
--- a/tests/modeltests/get_latest/tests.py
+++ b/tests/modeltests/get_latest/tests.py
@@ -43,6 +43,9 @@ class LatestTests(TestCase):
             a3,
         )
 
+        # Ensure that latest() overrides any other ordering specified on the query. Refs #11283.
+        self.assertEqual(Article.objects.order_by('id').latest(), a4)
+
     def test_latest_manual(self):
         # You can still use latest() with a model that doesn't have
         # "get_latest_by" set -- just pass in the field name manually.