/**
  * The subscribe view and processor
  */
 public function unsubscribeAction()
 {
     $identity = $this->authenticate();
     $userId = $identity['id'];
     $feedId = $this->getRequest()->getParam('feedId');
     // delete if possible
     $deleted = $feedId ? $this->portal->delete("user_id = {$userId} and feed_id = {$feedId}") : 0;
     $this->view->status = $deleted;
 }