Delete with Jquery

delete_jquery.php

public function delete($id = null) {
    if ($this->request->is('ajax')) {
        $this->autoRender = false;
        $this->layout = null;

        $response = array();
        $cur_date = date("Y-m-d H:i:s");
                $this->request->data['User']['is_deleted']=1;
                $this->request->data['User']['is_active']=0;
                $this->request->data['User']['date_deleted']=$cur_date;
                $this->request->data['User']['date_updated']=$cur_date;
                $this->User->id = $id;
		if ($this->User->save($this->request->data)) {
            $response['success'] = true;
            $response['message'] = __('User deleted',array('class' => 'message'));
            $response['redirect'] = Router::url(array('action' => 'index'));
        } else {
            $response['success'] = false;
            $response['message'] = __('User was not deleted');
            $response['redirect'] = Router::url(array('action' => 'index'));
        }

        echo json_encode($response);
    }

    die();
 }



$(document).ready(function() {
    $('a.delete').click(function(e) {
       // var __this = this;
        e.preventDefault();
        var parent = $(this).parent("td").parent("tr");
        $.ajax({
            type: 'get',
            url: $(this).attr("href"),
            dataType: 'json',
            beforeSend: function() {
                parent.animate({'backgroundColor':'#C3C3C3'},1000);
            },
            success: function(response) {
                if(response.success){
                    alert("Are you sure to delete the user?");
                    parent.slideUp(1000,function() {
                    parent.remove();
                  });
                }else{
                    alert("Failed to delete the user");
                    parent.animate({'backgroundColor':'#fff'},1000);//Restore your background back
                }
            }
        });
    });
});


<a href="<?php echo $this->Html->url(array("action" => "delete", $user['User']['id'])) ?>" class="delete">Delete</a></td>