Yii用于控制控制器下所有动作的神奇方法

Question

突击队需要你的帮助.

我在Yii有一个控制器:

class PageController extends Controller {
    public function actionSOMETHING_MAGIC($pagename) {
        // Commando will to rendering,etc from here
    }
}

我需要在Yii CController下使用一些神奇的方法来控制/ page ||下的所有子请求 页面控制器.

这是Yii的某种可能吗？

谢谢!

Answer 1

当然有.最简单的方法是覆盖该missingAction方法.

这是默认实现:

public function missingAction($actionID)
{
    throw new CHttpException(404,Yii::t('yii','The system is unable to find the requested action "{action}".',
        array('{action}'=>$actionID==''?$this->defaultAction:$actionID)));
}

您可以简单地用例如替换它

public function missingAction($actionID)
{
    echo 'You are trying to execute action: '.$actionID;
}

在上面,$actionID是你所指的$pageName.

稍微更复杂但也更强大的方法是覆盖该createAction方法.这是默认实现:

/**
 * Creates the action instance based on the action name.
 * The action can be either an inline action or an object.
 * The latter is created by looking up the action map specified in {@link actions}.
 * @param string $actionID ID of the action. If empty, the {@link defaultAction default action} will be used.
 * @return CAction the action instance, null if the action does not exist.
 * @see actions
 */
public function createAction($actionID)
{
    if($actionID==='')
        $actionID=$this->defaultAction;
    if(method_exists($this,'action'.$actionID) && strcasecmp($actionID,'s')) // we have actions method
        return new CInlineAction($this,$actionID);
    else
    {
        $action=$this->createActionFromMap($this->actions(),$actionID,$actionID);
        if($action!==null && !method_exists($action,'run'))
                throw new CException(Yii::t('yii', 'Action class {class} must implement the "run" method.', array('{class}'=>get_class($action))));
        return $action;
    }
}

例如,你可以做一些像笨手笨脚的事情

public function createAction($actionID)
{
    return new CInlineAction($this, 'commonHandler');
}

public function commonHandler()
{
    // This, and only this, will now be called for  *all* pages
}

或者你可以根据你的要求做一些更精细的事情.

Answer 2

你的意思是CController或Controller(最后一个是你的扩展类)？如果您像这样扩展CController类:

class Controller extends CController {
   public function beforeAction($pagename) {

     //doSomeMagicBeforeEveryPageRequest();

   }
}

你可以得到你需要的东西