Jquery - auto complete with clickable links - php

Question

I have implemented search module with jqueryUI autocomplete in which search suggestions are rendered with their category.
Now i want to make those suggestions clickable,I've already tried select function but its not working,now i stuck in it
My Jquery Code is
$( function() {
$.widget("custom.catcomplete", $.ui.autocomplete, {
_renderMenu: function(ul, items) {
var that = this,
currentCategory = "";
$.each(items, function(index, item) {
if (item.category != currentCategory) {
ul.append("<li class='ui-autocomplete-category'>" + item.category + "</li>");
currentCategory = item.category;
}
that._renderItemData(ul, item);
});
}
});
$( "#search" ).catcomplete({
source : function(request,response){
var term = $("#search").val();
$.ajax({
type : "GET",
url : "ajax/auto_search.php",
dataType : "json",
data : {term : term},
success : function(data)
{
console.log(data);
response($.map(data.list, function(item) {
return {
value: item.content_title,
label: item.content_title,
category: item.category_name,
url : item.url
}
}))
},
select: function( event, ui ) {
//main problem is with item.content_title unable to get its value
window.location.href = 'search.php?mode=content_type&query='+item.content_title;
}
});
}
});
});
php code is
<?php
include '../includes/dbconfig.php';
header('Content-Type: application/json');
$searchTerm = $_GET['term'];
$sql = "SELECT distinct content_title, c.content_title,p.category_name,c.content_url from content_ref_table c inner join category_ref_table p on p.category_id = c.category_id where c.content_title LIKE '%".$searchTerm."%' ORDER BY c.content_title ASC LIMIT 0,10";
$result = mysqli_query($conn,$sql) or die(mysqli_error($conn));
$data_array = array();
while($row = mysqli_fetch_array($result))
{
$data_array['list'][] = array("content_title" => $row['content_title'], "category_name" => $row['category_name'],"url" => $row['content_url'] );
}
echo json_encode($data_array);
?>
**EDIT: how Can I store the item.content_title in a global variable?i think if i'm able to store the item.content_title in variable then it can solve my problem **