TP5多条件搜索,同时有必要条件

$model = $this->model;
        // 查询是否有搜索参数
        $search = input(‘?get.search‘) ? trim(input(‘get.search‘)) : false;

        $list = $model;
        if($search) {
            // 查询相关标签
            $searchTags = model(‘tag‘)
                    ->alias(‘a‘)
                    ->join(‘tagmap b‘, ‘b.tagid = a.id‘)
                    ->where(‘a.name‘, ‘like‘, ‘%‘ . $search . ‘%‘)
                    ->column(‘b.tid‘);
            $tagsTeacherIdsArr = preg_grep(‘/\d+/‘ ,$searchTags);
            $tagsTeacherIds = join(‘,‘ ,array_unique($tagsTeacherIdsArr));
　　　　　　　　// 闭包搜索 内容
            $list = $list->where(function ($query) use ($search, $tagsTeacherIds) {
                $query->whereOr(‘id‘,‘in‘,$tagsTeacherIds)
                    ->whereOr(‘name‘, ‘like‘, ‘%‘ . $search . ‘%‘)
                    ->whereOr(‘desc‘, ‘like‘, ‘%‘ . $search . ‘%‘);
            });
        }
　　　　　　// 必要条件
        $list = $list->where([
                ‘ispublic‘ => 1,
                ‘isdel‘ => 0
            ])
            ->order(‘sort‘,‘desc‘)
            ->paginate(15,false,[
                ‘query‘ => request()->param()
            ]);