public APIReturn Get_item(ulong?Id)
        {
            PostsInfo item = Posts.GetItem(Id);

            if (item == null)
            {
                return(new APIReturn(98, "记录不存在,或者没有权限"));
            }
            return(new APIReturn(0, "成功", "item", item.ToBson()));
        }
        public APIReturn Post_insert([FromForm] ulong?Posts_id, [FromForm] ulong?Topics_id, [FromForm] ulong?Users_id, [FromForm] string Content, [FromForm] int?Count_good, [FromForm] int?Count_notgood, [FromForm] uint?Index)
        {
            PostsInfo item = new PostsInfo();

            item.Posts_id      = Posts_id;
            item.Topics_id     = Topics_id;
            item.Users_id      = Users_id;
            item.Content       = Content;
            item.Count_good    = Count_good;
            item.Count_notgood = Count_notgood;
            item.Create_time   = DateTime.Now;
            item.Index         = Index;
            item = Posts.Insert(item);
            return(new APIReturn(0, "成功", "item", item.ToBson()));
        }