Fixes #14873 -- A paginated ListView with a List instead of queryset produces an error.

Additional minor change in functionality: the page is now not considered paginated if the objects do not span multiple pages according to the paginator. This will only affect views with a custom paginator method which uses orphans.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14864 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/views/generic/list.py

@@ -32,9 +32,9 @@ class MultipleObjectMixin(object):
         """
         Paginate the queryset, if needed.
         """
-        if queryset.count() > page_size:
         paginator = self.get_paginator(queryset, page_size, allow_empty_first_page=self.get_allow_empty())
-            page = self.kwargs.get('page', None) or self.request.GET.get('page', 1)
+        if paginator.num_pages > 1:
+            page = self.kwargs.get('page') or self.request.GET.get('page') or 1
             try:
                 page_number = int(page)
             except ValueError:

docs/ref/class-based-views.txt

@@ -344,22 +344,22 @@ MultipleObjectMixin
 
     **Context**
 
-        * ``object_list``: The list of object that this view is displaying. If
+        * ``object_list``: The list of objects that this view is displaying. If
           ``context_object_name`` is specified, that variable will also be set
           in the context, with the same value as ``object_list``.
 
         * ``is_paginated``: A boolean representing whether the results are
           paginated. Specifically, this is set to ``False`` if no page size has
-          been specified, or if the number of available objects is less than or
-          equal to ``paginate_by``.
+          been specified, or if the available objects do not span multiple
+          pages.
 
         * ``paginator``: An instance of
           :class:`django.core.paginator.Paginator`. If the page is not
-          paginated, this context variable will be ``None``
+          paginated, this context variable will be ``None``.
 
         * ``page_obj``: An instance of
           :class:`django.core.paginator.Page`. If the page is not paginated,
-          this context variable will be ``None``
+          this context variable will be ``None``.
 
 MultipleObjectTemplateResponseMixin
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tests/regressiontests/generic_views/list.py

@@ -90,7 +90,7 @@ class ListViewTests(TestCase):
         self._make_authors(7)
         res = self.client.get('/list/authors/paginated/custom_class/')
         self.assertEqual(res.status_code, 200)
-        self.assertIsInstance(res.context['paginator'], CustomPaginator)
+        self.assertIsNone(res.context['paginator'])
         # Custom pagination allows for 2 orphans on a page size of 5
         self.assertEqual(len(res.context['object_list']), 7)
 
@@ -101,6 +101,11 @@ class ListViewTests(TestCase):
         # Custom pagination allows for 2 orphans on a page size of 5
         self.assertEqual(len(res.context['object_list']), 7)
 
+    def test_paginated_non_queryset(self):
+        res = self.client.get('/list/dict/paginated/')
+        self.assertEqual(res.status_code, 200)
+        self.assertEqual(len(res.context['object_list']), 1)
+
     def test_allow_empty_false(self):
         res = self.client.get('/list/authors/notempty/')
         self.assertEqual(res.status_code, 200)

tests/regressiontests/generic_views/urls.py

@@ -98,6 +98,8 @@ urlpatterns = patterns('',
     # ListView
     (r'^list/dict/$',
         views.DictList.as_view()),
+    (r'^list/dict/paginated/$',
+        views.DictList.as_view(paginate_by=1)),
     url(r'^list/authors/$',
         views.AuthorList.as_view(),
         name="authors_list"),