和Java Swing中類似Yii Framework 中的Layout 也允許嵌套,這是通過CContentDecorator來實現的,不過代碼中並不需要 直接使用CContentDecorator ,而是在定義layout使用
$this->beginContent('path/to/view');
// ... content to be decorated
$this->endContent();
其中view 為另外一個布局。
本例定義四個Layout,一個嵌套一個:

///main.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title><?php echo Yii::app()->name; ?></title>
</head>
<body>
<h1>Widget Demo</h1>
<?php echo $content; ?>
</body>
</html>
///row1.php
<?php $this->beginContent('/layouts/row2'); ?>
<center>
<?php echo $content; ?>
</center>
<p />
<center>
<?php echo 'row1 part'; ?>
</center>
<?php $this->endContent(); ?>
//row2.php
<?php $this->beginContent('/layouts/row3'); ?>
<center>
<?php echo $content; ?>
</center>
<p />
<center>
<?php echo 'row2 part'; ?>
</center>
<?php $this->endContent(); ?>
///row3.php
<?php $this->beginContent('/layouts/main'); ?>
<center>
<?php echo $content; ?>
</center>
<p />
<center>
<?php echo 'row3 part'; ?>
</center>
<?php $this->endContent(); ?>
顯示結果如下:

本例下載:http://www.imobilebbs.com/download/yii/ContentDecoratorDemo.zip