From e01f29b1b3a1391aad2a1509bb20dbc9b5d522ad Mon Sep 17 00:00:00 2001
From: jekkos-t520 <jeroen.peelaerts@gmail.com>
Date: Tue, 26 Nov 2013 18:58:45 +0100
Subject: [PATCH] This commit will fix a common problem in CodeIgniter. After
 $config['sess_time_to_update']  expires the session will be destroyed if
 concurrent AJAX calls are made to the framework. Original discussion on this
 problem can be found on the following URL

http://stackoverflow.com/questions/7980193/codeigniter-session-bugging-out-with-ajax-calls
---
 application/libraries/MY_Session.php | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 application/libraries/MY_Session.php

diff --git a/application/libraries/MY_Session.php b/application/libraries/MY_Session.php
new file mode 100644
index 000000000..05b165374
--- /dev/null
+++ b/application/libraries/MY_Session.php
@@ -0,0 +1,19 @@
+<?php
+class MY_Session extends CI_Session {
+
+    /**
+     * Update an existing session
+     *
+     * @access    public
+     * @return    void
+    */
+    function sess_update() {
+       // skip the session update if this is an AJAX call! This is a bug in CI; see:
+       // https://github.com/EllisLab/CodeIgniter/issues/154
+       // http://codeigniter.com/forums/viewthread/102456/P15
+       if ( !($this->CI->input->is_ajax_request()) ) {
+           parent::sess_update();
+       }
+    }
+}
+