// 保存评论
    public function saveComment($data)
    {
        Db::startTrans();
        try{
            //计算嵌套循环
            $query = self::withTrashed()->order('rgt','desc');
            $parent_id = $data['parent_id'] ?? 0;
            if($parent_id){
                $query->where('id',$parent_id);
            }
            $parent = $query->find();
            if($parent_id>0 && $parent){
                if($parent['rgt'] == $parent['lft'] + 1){
                    //叶子节点
                    $rgt = $parent['lft'];
                }else{
                    //子节点
                    $rgt = self::withTrashed()->where('parent_id',$parent->id)->order('rgt','desc')->lock(true)->value('rgt');
//                    $rgt = $rgt>0 ? $rgt : 0;
                }
                $parent_deep = $parent['deep'] ?? 0;
            }else{
                $rgt = $parent['rgt'] ?? 0;
                $parent_deep = 0;
            }
            self::withTrashed()->where('rgt','>',$rgt)->order('rgt','desc')->inc('rgt',2)->update();
            self::withTrashed()->where('lft','>',$rgt)->order('lft','desc')->inc('lft',2)->update();

            $this->user_id = $data['user_id'];
            $this->topic_id = $data['topic_id'];
            $this->content = $data['content'];
            $this->status = BaseModel::ENABLE;
            $this->parent_id = $parent_id;
            $this->lft = $rgt + 1;
            $this->rgt = $rgt + 2;
            $this->deep = $parent_deep + 1;
            $result = $this->save();
            if($result){
                //计算活跃度
                $active_num = Config::get('topic.active_num_comment',5);
                //增加话题评论数
                $result = Topic::where('id',$this->topic_id)->inc('comment_num')->inc('active_num',$active_num)->update();
                //增加mongo话题评论数
                $result2 = \app\topic\mongo\Topic::where('id',(int)$this->topic_id)->inc('comment_num')->inc('active_num',$active_num)->update();
                //增加上级评论数
                if($parent_id > 0){
                    self::where('id',$parent_id)->inc('comment_num')->update();
                }
            }
            $topic_user_id = 0;
            $topic_info = (new Topic())->where('')->find();
            if($topic_info){
                $topic_user_id = $topic_info['id'];
            }
            UserEvent::create(['user_id'=>$data['user_id'],'topic_id'=>$data['topic_id'],'create_time'=>time(),'status'=>1,'topic_user_id'=>$topic_user_id,'comment_msg'=>$data['content'],'is_see'=>0]);

            Db::commit();
        }catch (\Throwable $e){
            Db::rollback();
            return false;
        }
        return true;
    }