让Codeigniter控制器支持多级目录

 

<?php

if (!defined('BASEPATH')) {  exit ('No direct script access allowed');}


class MY_Router extends CI_Router {


        public function __construct() {

                 parent :: __construct();

                 $this->agent=load_class('user_agent');

                 //$this->directory='mobile/';

                 if ($this->agent->is_mobile()) {

                        $this->directory='mobile/';

                }  

                

        }

        function set_directory($dir) {

                $this->directory =  $this->directory.$dir . '/';

        }

        function _validate_request($segments) {

                if (count($segments) == 0) {

                        return $segments;

                } 

                if (file_exists(APPPATH . 'controllers/'.$this->fetch_directory() . $segments[0] . '.php')) {

                        return $segments;

                } 

                if (is_dir(APPPATH . 'controllers/' .$this->fetch_directory(). $segments[0])) {

                        $temp = array (

                                'dir' => '',

                                'number' => 0,

                                'path' => ''

                        );

                        $temp['number'] = count($segments) - 1;

 

                        for ($i = 0; $i <= $temp['number']; $i++) {

                                $temp['path'] .= $segments[$i] . '/';

 

                                if (is_dir(APPPATH . 'controllers/' . $temp['path'])) {

                                        $temp['dir'][] = str_replace(array (

                                                '/',

                                                '.'

                                        ), '', $segments[$i]);

                                }

                        }

                        $this->set_directory(implode('/', $temp['dir']));

                        $segments = array_diff($segments, $temp['dir']);

                        $segments = array_values($segments);

                        unset ($temp);

 

                        if (count($segments) > 0) {

                                if (!file_exists(APPPATH . 'controllers/' . $this->fetch_directory() . $segments[0] . '.php')) {

                                        if (!empty ($this->routes['404_override'])) {

                                                $x = explode('/', $this->routes['404_override']);

                                                $this->set_directory('');

                                                $this->set_class($x[0]);

                                                $this->set_method(isset ($x[1]) ? $x[1] : 'index');

                                                return $x;

                                        } else {

                                                show_404($this->fetch_directory() . $segments[0]);

                                        }

                                }

                        } else {

                                if (strpos($this->default_controller, '/') !== FALSE) {

                                        $x = explode('/', $this->default_controller);

                                        $this->set_class($x[0]);

                                        $this->set_method($x[1]);

                                } else {

                                        $this->set_class($this->default_controller);

                                        $this->set_method('index');

                                }

                                if (!file_exists(APPPATH . 'controllers/' . $this->fetch_directory() . $this->default_controller . '.php')) {

                                        $this->directory = '';

                                        return array ();

                                }

 

                        }

                        return $segments;

                }

                if (!empty ($this->routes['404_override'])) {

                        $x = explode('/', $this->routes['404_override']);

                        $this->set_class($x[0]);

                        $this->set_method(isset ($x[1]) ? $x[1] : 'index');

                        return $x;

                }

                show_404($segments[0]);

        }

}

 

使用方法：把上面的代码另存为MY_Router.php,放在你应用目录的core目录下。假设你的应用放在application目录,哪么你把MY_Router.php文件放在application/core目录下即可：

原生的CI最多只支持一级目录,地址如下：controllers/directory/appname.php,现在你可以写成controllers/directory/directory/directory/appname.php,如果你不觉得累写多少都没关系 (^0^)。

现目前在Codeigniter 2.1.0、Codeigniter 2.1.1、Codeigniter 2.1.2都测试通过！