Yii 丢失controller ID问题

用YII很久了今天看老代码发现了一个致命又气人的bug： “'SiteController cannot find the requested view "index"

在这个项目里对应的views/site/index.php文件都有，但是为什么还报了这个错呢， 于是开始看内核代码：

public function getViewFile($viewName)
{
if(($theme=Yii::app()->getTheme())!==null && ($viewFile=$theme->getViewFile($this,$viewName))!==false)
return $viewFile;
$moduleViewPath=$basePath=Yii::app()->getViewPath();
if(($module=$this->getModule())!==null)
$moduleViewPath=$module->getViewPath();
return $this->resolveViewFile($viewName,$this->getViewPath(),$basePath,$moduleViewPath);
}

结果发现 $this->getViewPath() 这句返回的是这样的东东“D:\www\Toplearning_PHP2\protected\views\” 没能看出问题继续往下看resolveViewFile方法

public function resolveViewFile($viewName,$viewPath,$basePath,$moduleViewPath=null)
{
if(empty($viewName))
return false;

if($moduleViewPath===null)
$moduleViewPath=$basePath;

if(($renderer=Yii::app()->getViewRenderer())!==null)
$extension=$renderer->fileExtension;
else
$extension='.php';
if($viewName[0]==='/')
{
if(strncmp($viewName,'//',2)===0)
$viewFile=$basePath.$viewName;
else
$viewFile=$moduleViewPath.$viewName;
}
elseif(strpos($viewName,'.'))
$viewFile=Yii::getPathOfAlias($viewName);
else
$viewFile=$viewPath.DIRECTORY_SEPARATOR.$viewName;

if(is_file($viewFile.$extension))
return Yii::app()->findLocalizedFile($viewFile.$extension);
elseif($extension!=='.php' && is_file($viewFile.'.php'))
return Yii::app()->findLocalizedFile($viewFile.'.php');
else
return false;
}

记过发现$viewFile.$extension 返回的是“D:\www\Toplearning_PHP2\protected\views\\index” 这是个什么东东？？？？ 本应该时这样地“...\views\controllerId\actionId”;
 controllerId竟然丢了， 这也太不科学了， controllerId怎么可能会丢呢，于是到SiteController 打印了下$this 结果发现还真没有，这问题头大了， 于是乎从runController又看了一遍内核， 结果发现在"CController.php"这个文件里有个方法

public function __construct($id,$module=null)
{
$this->_id=$id;
$this->_module=$module;
$this->attachBehaviors($this->behaviors());
}

很明显在runController时Controller的ID是在这里初始化的，那好办了看看都谁认这个类当爹了，结果发现时protected/componets/Controller.php, 看看这个类吧

<?php
/**
* Controller is the customized base controller class.
* All controller classes for this application should extend from this base class.
*/
class Controller extends CController
{
/**
* @var string the default layout for the controller view. Defaults to 'column1',
* meaning using a single column layout. See 'protected/views/layouts/column1.php'.
*/
public $layout='column1';
/**
* @var array context menu items. This property will be assigned to {@link CMenu::items}.
*/
public $menu=array();
/**
* @var array the breadcrumbs of the current page. The value of this property will
* be assigned to {@link CBreadcrumbs::links}. Please refer to {@link CBreadcrumbs::links}
* for more details on how to specify this property.
*/
public $breadcrumbs=array();

public function __construct()
{
if (! isset($_COOKIE['SESSIONID']) && empty($_COOKIE['SESSIONID'])) {
$_session_id = Yii::app()->getSession()->getSessionID();
setcookie("SESSIONID", $_session_id, time() + 3600);
} else {
$_session_id = $_COOKIE['SESSIONID'];
}
session_id($_session_id);
}

}

很明显这个类复写了父类的__construct方法结果没初始化父类的方法把ControllerId的初始化搞没了，改一下

public function __construct($id,$module=null)
{
parent::__construct($id,$module=null);
if (! isset($_COOKIE['SESSIONID']) && empty($_COOKIE['SESSIONID'])) {
$_session_id = Yii::app()->getSession()->getSessionID();
setcookie("SESSIONID", $_session_id, time() + 3600);
} else {
$_session_id = $_COOKIE['SESSIONID'];
}
session_id($_session_id);
}