首先你系统扩展类是放在application/core下面的,本来系统核心类是CI_Controller,所以你不能以CI_开头了,你需要打开 application/config/config.php 修改 $config['subclass_prefix'] = 'MY_'; 为你的前缀!
一些公共的模块就可以卸载自己的核心类里面了!
这几天读了Dilicms(轻量级的后台架构),比如说他的后台扩展类是这样的:
- <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
- abstract class Admin_Controller extends CI_Controller
- {
- /**
- * _admin
- * 保存当前登录用户的信息
- *
- * @var object
- * @access public
- **/
- public $_admin = NULL;
- /**
- * 构造函数
- *
- * @access public
- * @return void
- */
- public function __construct()
- {
- parent::__construct();
- $this->load->library('session');
- $this->settings->load('backend');
- $this->load->switch_theme(setting('backend_theme'));
- $this->_check_login();
- $this->load->library('acl');
- $this->load->library('plugin_manager');
- }
- // ------------------------------------------------------------------------
- /**
- * 检查用户是否登录
- *
- * @access protected
- * @return void
- */
- protected function _check_login()
- {
- if ( ! $this->session->userdata('uid'))
- {
- redirect(setting('backend_access_point') . '/login');
- }
- else
- {
- $this->_admin = $this->user_mdl->get_full_user_by_username($this->session->userdata('uid'), 'uid');
- if ($this->_admin->status != 1)
- {
- $this->session->set_flashdata('error', "此帐号已被冻结,请联系管理员!");
- redirect(setting('backend_access_point') . '/login');
- }
- }
- }
- // ------------------------------------------------------------------------
- /**
- * 加载视图
- *
- * @access protected
- * @param string
- * @param array
- * @return void
- */
- protected function _template($template, $data = array())
- {
- $data['tpl'] = $template;
- $this->load->view('sys_entry', $data);
- }
- // ------------------------------------------------------------------------
- /**
- * 检查权限
- *
- * @access protected
- * @param string
- * @return void
- */
- protected function _check_permit($action = '', $folder = '')
- {
- if ( ! $this->acl->permit($action, $folder))
- {
- $this->_message('对不起,你没有访问这里的权限!', '', FALSE);
- }
- }
- // ------------------------------------------------------------------------
- /**
- * 信息提示
- *
- * @access public
- * @param string
- * @param string
- * @param bool
- * @param string
- * @return void
- */
- public function _message($msg, $goto = '', $auto = TRUE, $fix = '')
- {
- if($goto == '')
- {
- $goto = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : site_url();
- }
- else
- {
- $goto = strpos($goto, 'http') !== false ? $goto : backend_url($goto);
- }
- $goto .= $fix;
- $this->_template('sys_message', array('msg' => $msg, 'goto' => $goto, 'auto' => $auto));
- echo $this->output->get_output();
- exit();
- }
- }
它就把一些公共信息入验证,登陆,跳转放在Admin_Controller里面,于是我在写前台的时候也是这样操作,扩展了Font_Controller:
- abstract class Font_Controller extends CI_Controller{
- public function __construct() {
- parent::__construct();
- }
- //前台加载视图方法
- public function _template($template, $data = array()){
- $data['nav'] = $this->get_nav();
- $data['tpl'] = $template;
- $this->load->view('default',$data);
- }
- //公共导航信息
- public function get_nav(){
- }
- //公共友情链接信息
- public function get_friendlink(){
- }
- }
提示,一些经常用到得工具和函数可以放在helper中!