public function flagComment() {
        if (!$this->request->is('ajax')) {
            $this->redirect('/');
        } else {
            $userId = $this->Session->read('Auth.User.id');
            $this->autoRender = $this->layout = false;

            if (!empty($this->request->data)) {
                $commentId = $this->request->data['commentId'];

                $this->CommentsFlag->set($this->data);
                $this->CommentsFlag->set('user_id', $userId);
                $this->CommentsFlag->set('comment_id', $commentId);

                if (!$this->CommentsFlag->userAlreadyFlagged($userId, $commentId)) {
                    if ($this->CommentsFlag->save($this->request->data)) {
                        $message = array('response' => 'success');
                    }
                } else {
                    $message = array('response' => 'alreadyFlagged');
                }

                return json_encode($message);
            }
        }
    }