推入mongoose对象内部的数组

Question

我正在使用mongoose将一个玩家推入mongoose中的玩家数组，当一个玩家加入游戏时。我收到以下错误:“无法规范查询：BadValue未知顶级运算符:$PUSH”

var GameSchema = new mongoose.Schema({
_id: mongoose.Schema.Types.Mixed,
players: [{
  username: String,
  currentRound: Number
}],
// the number represents the qNumber in the questionData.js
// and also the round number for what the player is currently on
questions: [Number]
});

var Game = mongoose.model('Game', GameSchema);

var updateGame = function(req,res,next){
Game.findByIdAndUpdate(
  req.body.code,
  {$push: {"players": {username: "hardcode", currentRound: 1}}},
  {safe: true, upsert: true, new: true},
  function(err, model){
    if (err){
      console.log("ERROR: ", err);
      res.send(500, err);
    }else{
      res.status(200).send(model);
    }
  }
);
};

Answer 1

啊，我总是一问就想出解决办法。

结果是，由于我覆盖了模式中的_id键，Game.findByIdandUpdate不起作用。相反,我使用了传入_id键的findOneAndUpdate：

Game.findOneAndUpdate(
{"_id":req.body.code},
{$push: {"players": {username: "hardcode", currentRound: 1}}},
{safe: true, upsert: true, new: true},
function(err, model){
   if (err){
     console.log("ERROR: ", err);
     res.send(500, err);
   }else{
     res.status(200).send(model);
   }
  }
);