Catch exception and continue in graph datasources iteration

views/utils.py

@@ -101,8 +101,12 @@ def graph_for_each_interface(datasources, start='-1d', end='-100'):
         dss = datasources[i * 2:i * 2 + 2]
         if dss:
             ifce = Ifce.objects.get(pk=dss[0].object_id)
-            png = dss[0].graph_set.filter(type='traffic')[0].get_draw_url()
-            mon = dss[0].graph_set.filter(type='traffic')[0].get_absolute_url()
+            # import pdb; pdb.set_trace()
+            try:
+                png = dss[0].graph_set.filter(type='traffic')[0].get_draw_url()
+                mon = dss[0].graph_set.filter(type='traffic')[0].get_absolute_url()
+            except IndexError:
+                continue
             if start and end:
                 png += '%s,%s/' % (start, end)
             response.update({