Difference between #2 and #1 of Using loginRequiredAjaxResponse to solve ajax session timeout

This solution requires Yii 1.1.9 or above

**The problem:**

A user has no activity for a longer period of time and the php session times
out.
After the session has expired he makes an Ajax request and nothing happens or,
in case of a grid view, the grid completely disappears.

**Expected behavior:**

Show the login page and redirect after successful login

**The solution:**

Set 'loginRequiredAjaxResponse' in your configuration (config/main.php)
~~~
[php]
...
'components'=>array(
	'user'=>array(			
		...
		'loginRequiredAjaxResponse' => 'YII_LOGIN_REQUIRED',
		...
	),
	...
~~~

In your view or template
~~~
[php]
<?php
	if (Yii::app()->components['user']->loginRequiredAjaxResponse){
		Yii::app()->clientScript->registerScript('ajaxLoginRequired', '
			jQuery("body").ajaxComplete(
				function(event, request, options) {
					if (request.responseText ==
"'.Yii::app()->components['user']->loginRequiredAjaxResponse.'")
{
						window.location.href = options.url;
					}
				}
			);
		');
	}
?>
~~~

Note:

The code above is tested with a grid view where options.url is a useable page
url.
If this is not the case or you just want to redirect
toshow the login page with no redirect afterwards you can
replace
~~~
[php]
window.location.href = options.url;
~~~
with
~~~
[php]
window.location.href = "'.Yii::app()->createUrl('/site/login').'"
~~~