Use dictionary to format order clause

trytond/osv/orm.py

@@ -2519,8 +2519,11 @@ class ORM(object):
                     return order_by, tables, clause
 
             if field_name:
-                if '%s' in field_name:
-                    order_by.append(field_name % table_name + ' ' + otype)
+                if '%(table)s' in field_name or '%(order)s' in field_name:
+                    order_by.append(field_name % {
+                        'table': table_name,
+                        'order': otype,
+                        })
                 else:
                     order_by.append(table_name + '.' + field_name + ' ' + otype)
                 return order_by, tables, clause