From e8189636b3486a531076ece58cb64e2e9d7f1c7f Mon Sep 17 00:00:00 2001
From: Michele Comitini <mcm@glisco.it>
Date: Sun, 20 Jan 2013 00:14:02 +0100
Subject: [PATCH] again correct management of null id: avoid returning None by
 sending empty string.

---
 gluon/tools.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gluon/tools.py b/gluon/tools.py
index f81d7eb4..d844cee8 100644
--- a/gluon/tools.py
+++ b/gluon/tools.py
@@ -4416,7 +4416,7 @@ class Service(object):
             if must_respond:
                 return return_response(id, s)
             else:
-                return
+                return ''
         except Service.JsonRpcException, e:
             return return_error(id, e.code, e.info)
         except BaseException: