From 4a7b163ce34628ac5392e27ca682cc7487459d94 Mon Sep 17 00:00:00 2001
From: Matthew Mongeau <halogenandtoast@gmail.com>
Date: Wed, 15 Aug 2012 11:37:44 -0400
Subject: [PATCH] Keep textbooks out of displayable items.

---
 common/lib/xmodule/xmodule/textbook_module.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/lib/xmodule/xmodule/textbook_module.py b/common/lib/xmodule/xmodule/textbook_module.py
index d0f7400cfc..e0d0730627 100644
--- a/common/lib/xmodule/xmodule/textbook_module.py
+++ b/common/lib/xmodule/xmodule/textbook_module.py
@@ -11,6 +11,9 @@ class TextbookModule(XModule):
     def get_display_items(self):
       return []
 
+    def displayable_items(self):
+      return []
+
 class TextbookDescriptor(XmlDescriptor):
 
     module_class = TextbookModule