public static function onUserRegistration(UserRegistrationEvent $event)
 {
     $user = $event->getUser();
     $token = $event->getToken();
     $password = $event->getPassword();
     Yii::app()->mailMessage->raiseMailEvent('USER_REGISTRATION', ['{user_email}' => $user->email, '{password}' => $password, '{activate_url}' => Yii::app()->createAbsoluteUrl('/user/account/activate', ['token' => $token->token]), '{site_name}' => Yii::app()->getModule('yupe')->siteName, '{host_info}' => Yii::app()->request->hostInfo]);
 }