public function removeAllAction()
    {
        $isPosted = $this->request->getPost('doRemoveAll');
        
        if (!$isPosted) {
            $this->response->redirect($this->request->getPost('redirect'));
        }

        $comments = new \Phpmvc\Comment\CommentsInSession();
        $comments->setDI($this->di);

        $comments->deleteAll();

        $this->response->redirect($this->request->getPost('redirect'));
    }