public async Task <IActionResult> Post(string userId, string text)
{
MessageBase body = new MessageBase(userId, text);
await Db.Connection.OpenAsync();
body.Db = Db;
await body.InsertAsync();
var query = new MessageQuery(Db);
var result = await query.LatestPostsAsync();
var json = await Task.Run(() => JsonConvert.SerializeObject(result));
return(new OkObjectResult(json));
}