NauxLiu / phphub-server

     * @param $topic_id

     * @param $user_id

     */

    public function favorite($topic_id, $user_id)

    {

        $topic = new Topic();

        $topic->id = $topic_id;

        if ($topic->favoriteBy()->wherePivot('user_id', $user_id)->exists()) {

            return;

        }

        $topic->favoriteBy()->attach($user_id);

    }

    /**

     * 取消收藏帖子.

     * @param $topic_id

     * @param $user_id

     */

    public function attention($topic_id, $user_id)

    {

        $topic = new Topic();

        $topic->id = $topic_id;

        if ($topic->attentionBy()->wherePivot('user_id', $user_id)->exists()) {

            return;

        }

        $topic->attentionBy()->attach($user_id);

    }

    /**

     * 取消关注帖子.