Made legacy `ObjectPaginator` truly backwards-compatible by catching both `AttributeError` and `TypeError` in `_get_count` as it did before

[7306].  Tests included.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@7819 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/paginator.py

@@ -173,7 +173,10 @@ class ObjectPaginator(Paginator):
         if self._count is None:
             try:
                 self._count = self.object_list.count()
-            except TypeError:
+            except (AttributeError, TypeError):
+                # AttributeError if object_list has no count() method.
+                # TypeError if object_list.count() requires arguments
+                # (i.e. is of type list).
                 self._count = len(self.object_list)
         return self._count
     count = property(_get_count)

tests/modeltests/pagination/models.py

@@ -200,6 +200,29 @@ InvalidPage: ...
 >>> paginator.page_range
 [1]
 
+# ObjectPaginator can be passed lists too.
+>>> paginator = ObjectPaginator([1, 2, 3], 5)
+>>> paginator.hits
+3
+>>> paginator.pages
+1
+>>> paginator.page_range
+[1]
+
+
+# ObjectPaginator can be passed other objects with a count() method.
+>>> class Container:
+...     def __len__(self):
+...         return 42
+>>> paginator = ObjectPaginator(Container(), 10)
+>>> paginator.hits
+42
+>>> paginator.pages
+5
+>>> paginator.page_range
+[1, 2, 3, 4, 5]
+
+
 ##################
 # Orphan support #
 ##################