# HG changeset patch
# User Marcin Kuzminski <marcin@rhodecode.com>
# Date 2017-08-17 20:44:25
# Node ID a04ecb8dd0b113e6a33541d3349d30c981ebc3d0
# Parent  5a2a7c7ae11b98ac2bbeedc0e7cb3fe6bbd9c30f

data-grid-app: added universal function for extracting ordering.

- now supports format a.b
- supports passing a ref column e.g User.username, get's handy for joined querie

diff --git a/rhodecode/apps/_base/__init__.py b/rhodecode/apps/_base/__init__.py
--- a/rhodecode/apps/_base/__init__.py
+++ b/rhodecode/apps/_base/__init__.py
@@ -20,6 +20,7 @@
 
 import time
 import logging
+import operator
 
 from pyramid.httpexceptions import HTTPFound
 
@@ -283,6 +284,15 @@ class DataGridAppView(object):
         draw = safe_int(request.GET.get('draw'))
         return draw, start, length
 
+    def _get_order_col(self, order_by, model):
+        if isinstance(order_by, basestring):
+            try:
+                return operator.attrgetter(order_by)(model)
+            except AttributeError:
+                return None
+        else:
+            return order_by
+
 
 class BaseReferencesView(RepoAppView):
     """