how to get ajax response from view cakephp - php

Question

I am using cakephp2 and working with ajax , well i have successfully get the response of ajax request form controller action but i am not getting the response from view to success method.
Here is my code.
Code For ajax Request:
var data = new Array(maincatagory,subcatagory,experience,degree,city,area);
ajaxfunction(data);
function ajaxfunction(d){
var jsonString = JSON.stringify(d);
$.ajax({
type: "POST",
url: "/FindTutor/posts/searchresults",
data: {data : jsonString},
cache: false,
success: function(data){
alert(data);
}
}).fail(function(){
alert('request fail');
});
}
Now here first I get array and pass to data after jasonStringfy.
Now In posts/searchresults action:
public function searchresults(){
if( $this->request->is('ajax') ) {
$data = json_decode(stripslashes($_POST['data']));
$this->request->onlyAllow('ajax');
$this->set(compact('data')); // Pass $data to the view
$this->set('_serialize', 'data');
$this->layout = 'ajax';
die();
}
}
And Now in searchresults view I am doing this:
<?php foreach($data as $d){
echo $d;
} ?>
But I am not getting the data back or responce from view.
Another Thing is If i echo data in controller action I get the responce successflly,Like this,
public function searchresults(){
if( $this->request->is('ajax') ) {
$data = json_decode(stripslashes($_POST['data']));
$this->request->onlyAllow('ajax');
<?php
foreach($data as $d){
echo $d;
}
?>
$this->layout = 'ajax';
die();
}
}
Help me I'm really stuck. Thanks in advance.