From 859f60123c44e71cf514b3fc1335738b7d2d9fb2 Mon Sep 17 00:00:00 2001
From: polesye <s2pak.anton@gmail.com>
Date: Thu, 10 Oct 2013 17:15:57 +0300
Subject: [PATCH] Add EmptyDataRawDescriptor.

---
 common/lib/xmodule/xmodule/lti_module.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/common/lib/xmodule/xmodule/lti_module.py b/common/lib/xmodule/xmodule/lti_module.py
index e2c4832251..cd330ab9a2 100644
--- a/common/lib/xmodule/xmodule/lti_module.py
+++ b/common/lib/xmodule/xmodule/lti_module.py
@@ -10,6 +10,7 @@ import oauthlib.oauth1
 import urllib
 
 from xmodule.editing_module import MetadataOnlyEditingDescriptor
+from xmodule.raw_module import EmptyDataRawDescriptor
 from xmodule.x_module import XModule
 from xmodule.course_module import CourseDescriptor
 from pkg_resources import resource_string
@@ -254,8 +255,8 @@ oauth_consumer_key="", oauth_signature="frVp4JuvT1mVXlxktiAUjQ7%2F1cw%3D"'}
         return params
 
 
-class LTIModuleDescriptor(LTIFields, MetadataOnlyEditingDescriptor):
+class LTIModuleDescriptor(LTIFields, MetadataOnlyEditingDescriptor, EmptyDataRawDescriptor):
     """
-    LTIModuleDescriptor provides no export/import to xml.
+    Descriptor for LTI Xmodule.
     """
     module_class = LTIModule