1.修改Loader链式加载header和footer方式
参考:http://stackoverflow.com/questions/9540576/header-and-footer-in-codeigniter/
<?php
/**
* /application/core/MY_Loader.php
*
*/
class MY_Loader extends CI_Loader {
public function template($template_name, $vars = array(), $return = FALSE)
{
$content = $this->view('templates/header', $vars, $return);
$content .= $this->view($template_name, $vars, $return);
$content .= $this->view('templates/footer', $vars, $return);
if ($return)
{
return $content;
}
}
}
在controller中这样调用:
<?php
$this->load->template('body');
2.继承Controller方式
2.1.在application/core目录下定义MY_Controller内容如下：
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class MY_Controller extends CI_Controller
{
protected $layout = 'layout/main';
private $js_files = array();
private $css_files = array();
public function __construct()
{
parent::__construct();
}
public function add_js()
{
//添加js文件
}
public function add_css(){
//添加css文件
}
//file 表示是否使用渲染子视图文件，viewData表示的是子视图中渲染数据，$layout表示父视图中使用的全局数据
protected function render($file = NULL, &$viewData = array(), $layoutData = array())
{
if( !is_null($file) ) {
$data['content'] = $this->load->view($file, $viewData, TRUE);
$data['layout'] = $layoutData;
$this->load->view($this->layout, $data);
} else {
$this->load->view($this->layout, $viewData);
}
$viewData = array();
}
}
2.2.在layout下建立 main.php文件，内容如下
<html>
<head>
<title><?php echo $layout['title'];?></title>
</head>
<body>
<?php echo $content?>
</body>
</html>
2.3.在自定义controller中继承自MY_Controller，添加比如下面测试代码：
public function layout(){
$data= array('user_name'=>'张三','password'=>'密码');
$this->render('test_layout',$data,array('title'=>'测试布局'));
}
2.4.test_layout.php代码如下
<h1><?php echo $user_name;?></h1>
3.创建Layout类库实现
3.1.application/libraries目录下创建layout.php文件:
<?php
if (! defined ( 'BASEPATH' ))
exit ( 'No direct script access allowed' );
class Layout {
public $layout;
function __construct($params = array('layout/main')) {
$this->layout = $params [0];
}
function view($view, $data = null, $flag = false) {
$ci = &get_instance ();
$data ['__CONTENT__'] = $ci->load->view ( $view, $data, true ); // 这里的第三个参数true代表不输出，如果是false就会输出，默认是false，和thinkphp里的display和assign类似，这里用第三个参数来控制
if ($flag) {
$view = $ci->load->view ( $this->layout, $data, true );
return $view;
} else {
$ci->load->view ( $this->layout, $data, false );
}
}
}
3.2.调用方式
$data = array ( 'username' => 'abc', 'register_url' => site_url ( '/account/register/callback' ) ); $this->layout->view ( 'oauth/callback', $data );
注：在调用之前要先加载layout库(autoload或在controller中加载)。