From 4b97d0e84f38abe369b745092bc2e5860a5eb9f7 2014-01-16 10:57:00
From: Jonathan Frederic <jdfreder@calpoly.edu>
Date: 2014-01-16 10:57:00
Subject: [PATCH] Fixed bug that prevent model.save() from being called on
widget models without views.

---

diff --git a/IPython/html/static/notebook/js/widget.js b/IPython/html/static/notebook/js/widget.js
index 12bfd55..4a2ab18 100644
--- a/IPython/html/static/notebook/js/widget.js
+++ b/IPython/html/static/notebook/js/widget.js
@@ -124,7 +124,12 @@ define(["components/underscore/underscore-min",
                     }
 
                     var data = {sync_method: method, sync_data: send_json};
-                    var output_area = this.last_modified_view.output_area;
+
+                    var output_area = null;
+                    if (this.last_modified_view != undefined && this.last_modified_view != null) {
+                        output_area = this.last_modified_view.output_area;    
+                    }
+                    
                     var callbacks = this._make_callbacks(output_area);
                     this.comm.send(data, callbacks);    
                     this.pending_msgs++;