yii - role base access control for module

After adding source code for role base access control validation (RBAC validation )for application. You can check the access role in Module level, Controller level or action level.

For module level, as you know each module have AdminModule class in which init()  likes module configuration method, and  beforeControllerAction() method is called before any module controller action is performed. You may place your customized code in this method to perform the access role checking for all controllers of current Module.

For example, I have an Admin module  in my application. I want to limit access of this module for administrator only.  In AdminModule class, I place checkAccess() like the followings:

class AdminModule extends CWebModule
{
 public function init()
 {
  $this->setImport(array(
   'admin.models.*',
   //'application.models.*',
   'admin.components.*',
  ));
 }
 
 public function beforeControllerAction($controller, $action)
 {
  if(parent::beforeControllerAction($controller, $action))
  {
   // this method is called before any module controller action is performed
   // you may place customized code here
   if ( !Yii::app()->user->checkAccess('admin') ) {
    if(Yii::app()->user->isGuest){
     $url = Yii::app()->createUrl(Yii::app()->user->loginUrl);
     Yii::app()->user->returnUrl = Yii::app()->createUrl('/admin/');
     Yii::app()->request->redirect($url);
    }
    else {
     throw new CHttpException(403,'Have no permission');
    }
   }
   return true;
  }
  else
   return false;
 }
}