YII中，在action可以通过$this->render来指定它的view。其实还其他一$this->render开头的函数。

yiilite.php中有这么几个函数。

public function renderText($text,$return=false)

{

if(($layoutFile=$this->getLayoutFile($this->layout))!==false)

$text=$this->renderFile($layoutFile,array('content'=>$text),true);

$text=$this->processOutput($text);

if($return)

return $text;

else

echo $text;

}

public function renderPartial($view,$data=null,$return=false,$processOutput=false)

{

if(($viewFile=$this->getViewFile($view))!==false)

{

$output=$this->renderFile($viewFile,$data,true);

if($processOutput)

$output=$this->processOutput($output);

if($return)

return $output;

else

echo $output;

}

else

throw new CException(Yii::t('yii','{controller} cannot find the requested view "{view}".',

array('{controller}'=>get_class($this), '{view}'=>$view)));

}

public function renderClip($name,$params=array(),$return=false)

{

$text=isset($this->clips[$name]) ? strtr($this->clips[$name], $params) : '';

if($return)

return $text;

else

echo $text;

}

public function renderDynamic($callback)

{

$n=count($this->_dynamicOutput);

echo "";

$params=func_get_args();

array_shift($params);

$this->renderDynamicInternal($callback,$params);

}

public function renderDynamicInternal($callback,$params)

{

$this->recordCachingAction('','renderDynamicInternal',array($callback,$params));

if(is_string($callback) && method_exists($this,$callback))

$callback=array($this,$callback);

$this->_dynamicOutput[]=call_user_func_array($callback,$params);

}

例如让action只输出一句话，不应用layout。可以用renderText

/**

* This is the default 'index' action that is invoked

* when an action is not explicitly requested by users.

*/

public function actionIndex()

{

//$viewData=array();

// renders the view file 'protected/views/site/index.php'

// using the default layout 'protected/views/layouts/main.php'

//$viewData['homeUrl'] = Yii::app()->homeUrl;

//$viewData['var1'] = '这是var1变量的对应的值';

//$this->layout='mylayout';

//$this->renderPartial('index',$viewData);

$this->layout=false;

$this->renderText('test',$return=false);

}

看看上面的render原型，可以看到可以调用一个回调函数。具体功能可以自己代码试用一下。

更强大的功能，需要自己慢慢发现。