From febcec1865be641fc46ce8fb2627bd24c32229ce Mon Sep 17 00:00:00 2001
From: "Eric A. Miller" <emiller@cpan.org>
Date: Thu, 14 Aug 2014 22:41:39 -0400
Subject: [PATCH] Check for existence before trying to override state variable

---
 Netdisco/share/views/ajax/device/ports.tt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Netdisco/share/views/ajax/device/ports.tt b/Netdisco/share/views/ajax/device/ports.tt
index 451688e3..fd612fd2 100644
--- a/Netdisco/share/views/ajax/device/ports.tt
+++ b/Netdisco/share/views/ajax/device/ports.tt
@@ -21,7 +21,9 @@ $(document).ready(function() {
     "stateLoadParams": function (settings, data) {
       [% FOREACH key IN params.keys %]
         [% NEXT UNLESS key.match('^c_') AND !key.match('^c_neighbors') AND params.$key == 'on' %]
-        data.columns[$('#dp-data-table').DataTable().column( '[% key %]:name' ).index()].visible = true;
+        if (data.columns[$('#dp-data-table').DataTable().column( '[% key %]:name' ).index()]) {
+          data.columns[$('#dp-data-table').DataTable().column( '[% key %]:name' ).index()].visible = true;
+        }
       [% END %]
     },
     "columns": [