From d22489e23b4230de58505d2e389d03e59119ce7c Mon Sep 17 00:00:00 2001
From: Nathan Gray <nathangray.bsc@gmail.com>
Date: Wed, 9 Oct 2013 13:07:29 +0000
Subject: [PATCH] Make sure callback is there before trying to call it.  If the
 template changes before the timeout fires, it might not be.

---
 etemplate/js/et2_dataview_view_grid.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/etemplate/js/et2_dataview_view_grid.js b/etemplate/js/et2_dataview_view_grid.js
index 6bf0a924bb..2a8ca22775 100644
--- a/etemplate/js/et2_dataview_view_grid.js
+++ b/etemplate/js/et2_dataview_view_grid.js
@@ -791,7 +791,11 @@ var et2_dataview_grid = et2_dataview_container.extend(et2_dataview_IViewRange,
 					{
 						var self = this;
 						window.setTimeout(function() {
-							self._callback.call(self._context, idxStart, idxEnd);
+							// If row template changes, self._callback might disappear
+							if(typeof self._callback != "undefined")
+							{
+								self._callback.call(self._context, idxStart, idxEnd);
+							}
 						}, 0);
 					}
 				}