Fixing an issue where a unique id was not being returned for the overview table, causing the same information to be rendered for instances with the same name but differing stats. Fixes bug #959489

Change-Id: I78050462903e1b971d0a219805d19c5f728e23f7

horizon/tables/base.py

@@ -954,6 +954,11 @@ class DataTable(object):
 
         By default this returns an ``id`` attribute on the given object,
         but this can be overridden to return other values.
+
+        .. warning::
+
+            Make sure that the value returned is a unique value for the id
+            otherwise rendering issues can occur.
         """
         return datum.id
 

horizon/usage/tables.py

@@ -49,7 +49,7 @@ class TenantUsageTable(BaseUsageTable):
                            filters=(timesince,))
 
     def get_object_id(self, datum):
-        return datum['name']
+        return id(datum)
 
     class Meta:
         name = "tenant_usage"