如何获得codeigniter的自定义路径

我使用codeigniter，我正在使用我的维护控制器，但我想知道最好的方法是请求它进入我的维护路线。不确定控制器的布局是否正确

我的路线 //目录最终用户

$route['maintenance'] = "catalog/common/maintenance";// Need to request this route.

$route['account/login'] = "catalog/account/login";
$route['account/register'] = "catalog/account/register";

维修控制员

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Maintenance extends CI_Controller {
public function index() {
if ($this->config->set_item('config_maintenance')) {
$route = '';

if (isset($this->request->get['route'])) {
$part = explode('/', $this->request->get['route']);

if (isset($part[0])) {
$route .= $part[0];
}           
}

// Show site if logged in as admin
$this->load->model('model_setting');
}
}
}

自定义控制器
如果创建自定义控制器，
您可以在_构造函数中检查网站是否处于维护状态。
任何从它继承的东西，都将应用规则

class MY_Controller extends CI_Controller
{

    public function __construct()
    {
        parent::__construct();

        // Check to see if the user is anything other than
        // admin, and redirect them.
        // Do your own authoring here.

        if(config_item('maintenance_mode') && $currentuser->group != "admin"){
            return $this->load->view('maintenance');
        }
    }
}