Made QuerySet slicing return IndexError instead of DoesNotExist (and …

…related changes).

git-svn-id: http://code.djangoproject.com/svn/django/trunk@2859 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/models/base.py

@@ -264,7 +264,10 @@ def _get_next_or_previous_by_FIELD(self, field, is_next):
         q = self.__class__._default_manager.order_by((not is_next and '-' or '') + field.name, (not is_next and '-' or '') + self._meta.pk.name)
         q._where.append(where)
         q._params.extend([param, param, getattr(self, self._meta.pk.attname)])
-        return q[0]
+        try:
+            return q[0]
+        except IndexError, e:
+            raise self.DoesNotExist, e.args
 
     def _get_next_or_previous_in_order(self, is_next):
         cachename = "__%s_order_cache" % is_next

django/db/models/query.py

@@ -128,12 +128,12 @@ def __getitem__(self, k):
                 else:
                     return list(self._clone(_offset=offset, _limit=limit))[::k.step]
             else:
-                return self._clone(_offset=k, _limit=1).get()
+                try:
+                    return self._clone(_offset=k, _limit=1).get()
+                except self.model.DoesNotExist, e:
+                    raise IndexError, e.args
         else:
-            try:
-                return self._result_cache[k]
-            except IndexError:
-                raise self.model.DoesNotExist, "%s matching query does not exist." % self.model._meta.object_name
+            return self._result_cache[k]
 
     def __and__(self, other):
         combined = self._combine(other)

django/views/defaults.py

@@ -35,7 +35,7 @@ def shortcut(request, content_type_id, object_id):
         if field.rel.to is Site:
             try:
                 object_domain = getattr(obj, field.name).all()[0].domain
-            except Site.DoesNotExist:
+            except IndexError:
                 pass
             if object_domain is not None:
                 break