1. 扩展核心类，主要作用就是扩展系统现在的功能。
为前台增加独立的视图文件夹：
a. 自定义路径常量 ：在application ->config/ constants.php中增加
/*my constant*/
define('THEMEES_DIR','themes/');
b. 在application文件夹的core中自定义MY_Loader.php
/*
分析核心类中自动加载的功能的实现方式
*/
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); class MY_Loader extends CI_Loader
{ protected $_theme = 'default/'; public function switch_themes_on()
{
$this->_ci_view_paths = array(FCPATH.THEMEES_DIR.$this->_theme => TRUE);
var_dump($this->_ci_view_paths);
}
public function switch_themes_off()
{ }
}
c. 自定义控制器：实现前台后台视图分离
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Home_Controller extends CI_Controller
{
public function __construct()
{
parent::__construct();
$this->load->switch_themes_on();
}
}
class Admin_Controller extends CI_Controller
{
public function __construct()
{
parent::__construct();
$this->load->switch_themes_off();
}
}
d. 定义控制器类，继承相应的Home_controller,admin_controller控制器。 在admin子控制器文件夹中，
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Hello extends Admin_Controller {
function index()
{
$data['title'] = "this is title.";
$data['content'] = "this is content.";
$this->load->view('hello.php',$data);
}
}
定义相应的视图文件夹及文件view /admin /hello.php
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body> </body>admin
<?php echo $content; ?>
</html>
前*立文件夹 /themes/default
控制器themes.php
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Themes extends Home_Controller {
function index()
{
$data['title'] = "this is title.";
$data['content'] = "this is content.";
$this->load->view('themes.php',$data);
}
}
注：系统仅支持一层子文件夹，因此需要扩展核心类，实现多层视图文件，及放置到其它独立文件夹中。