[1.0.X] Fixed #10516 -- Corrected admin search when the search_fields definition contains multiple fields on the same base model. Thanks to Zain Memon

Merge of r10684 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@10719 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/admin/views/main.py

@@ -190,7 +190,7 @@ class ChangeList(object):
         # Naked except! Because we don't have any other way of validating "params".
         # They might be invalid if the keyword arguments are incorrect, or if the
         # values are not in the correct type, so we might get FieldError, ValueError,
-        # ValicationError, or ? from a custom field that raises yet something else 
+        # ValicationError, or ? from a custom field that raises yet something else
         # when handed impossible data.
         except:
             raise IncorrectLookupParameters
@@ -227,11 +227,8 @@ class ChangeList(object):
 
         if self.search_fields and self.query:
             for bit in self.query.split():
-                or_queries = [models.Q(**{construct_search(field_name): bit}) for field_name in self.search_fields]
-                other_qs = QuerySet(self.model)
-                other_qs.dup_select_related(qs)
-                other_qs = other_qs.filter(reduce(operator.or_, or_queries))
-                qs = qs & other_qs
+                or_queries = [models.Q(**{construct_search(str(field_name)): bit}) for field_name in self.search_fields]
+                qs = qs.filter(reduce(operator.or_, or_queries))
             for field_name in self.search_fields:
                 if '__' in field_name:
                     qs = qs.distinct()

tests/regressiontests/admin_views/fixtures/multiple-child-classes.json

@@ -0,0 +1,107 @@
+[
+    {
+        "pk": 1,
+         "model": "admin_views.title",
+         "fields":
+        {
+        }
+    },
+
+    {
+        "pk": 2,
+         "model": "admin_views.title",
+         "fields":
+        {
+        }
+    },
+
+    {
+        "pk": 3,
+         "model": "admin_views.title",
+         "fields":
+        {
+        }
+    },
+
+    {
+        "pk": 4,
+         "model": "admin_views.title",
+         "fields":
+        {
+        }
+    },
+
+    {
+        "pk": 1,
+         "model": "admin_views.titletranslation",
+         "fields":
+        {
+            "text": "Bar",
+             "title": 1
+        }
+    },
+
+    {
+        "pk": 2,
+         "model": "admin_views.titletranslation",
+         "fields":
+        {
+            "text": "Foo",
+             "title": 2
+        }
+    },
+
+    {
+        "pk": 3,
+         "model": "admin_views.titletranslation",
+         "fields":
+        {
+            "text": "Few",
+             "title": 3
+        }
+    },
+
+    {
+        "pk": 4,
+         "model": "admin_views.titletranslation",
+         "fields":
+        {
+            "text": "Bas",
+             "title": 4
+        }
+    },
+
+    {
+        "pk": 1,
+         "model": "admin_views.recommender",
+         "fields":
+        {
+        }
+    },
+
+    {
+        "pk": 4,
+         "model": "admin_views.recommender",
+         "fields":
+        {
+        }
+    },
+
+    {
+        "pk": 2,
+         "model": "admin_views.recommendation",
+         "fields":
+        {
+            "recommender": 1
+        }
+    },
+
+    {
+        "pk": 3,
+         "model": "admin_views.recommendation",
+         "fields":
+        {
+            "recommender": 4
+        }
+    }
+]

tests/regressiontests/admin_views/models.py

@@ -238,6 +238,24 @@ class GalleryAdmin(admin.ModelAdmin):
 class PictureAdmin(admin.ModelAdmin):
     pass
 
+# a base class for Recommender and Recommendation
+class Title(models.Model):
+    pass
+
+class TitleTranslation(models.Model):
+    title = models.ForeignKey(Title)
+    text = models.CharField(max_length=100)
+
+class Recommender(Title):
+    pass
+
+class Recommendation(Title):
+    recommender = models.ForeignKey(Recommender)
+
+class RecommendationAdmin(admin.ModelAdmin):
+    search_fields = ('titletranslation__text', 'recommender__titletranslation__text',)
+
+
 admin.site.register(Article, ArticleAdmin)
 admin.site.register(CustomArticle, CustomArticleAdmin)
 admin.site.register(Section, save_as=True, inlines=[ArticleInline])
@@ -250,6 +268,8 @@ admin.site.register(EmptyModel, EmptyModelAdmin)
 admin.site.register(Fabric, FabricAdmin)
 admin.site.register(Gallery, GalleryAdmin)
 admin.site.register(Picture, PictureAdmin)
+admin.site.register(Recommendation, RecommendationAdmin)
+admin.site.register(Recommender)
 
 # We intentionally register Promo and ChapterXtra1 but not Chapter nor ChapterXtra2.
 # That way we cover all four cases:

tests/regressiontests/admin_views/tests.py

@@ -816,6 +816,21 @@ class AdminViewUnicodeTest(TestCase):
         response = self.client.post('/test_admin/admin/admin_views/book/1/delete/', delete_dict)
         self.assertRedirects(response, '/test_admin/admin/admin_views/book/')
 
+class AdminSearchTest(TestCase):
+    fixtures = ['admin-views-users','multiple-child-classes']
+
+    def setUp(self):
+        self.client.login(username='super', password='secret')
+
+    def tearDown(self):
+        self.client.logout()
+
+    def test_search_on_sibling_models(self):
+        "Check that a search that mentions sibling models"
+        response = self.client.get('/test_admin/admin/admin_views/recommendation/', data={'q':'bar'})
+        # confirm the search returned 1 object
+        self.assertContains(response, "\n1 recommendation\n")
+
 class AdminInheritedInlinesTest(TestCase):
     fixtures = ['admin-views-users.xml',]