我有一个名为Players的Schema和另一个名为Game的Schema。每个游戏都有一个名为players的属性,它是一个对玩家对象的引用数组。
游戏架构
let GameSchema = new mongoose.Schema({
players: [{
ref: "Player",
type: mongoose.Schema.Types.ObjectId,
}],
created: {
type: Date,
default: Date.now,
}
}, { usePushEach: true });
PlayerSchema
let PlayerSchema = new mongoose.Schema({
parentGameId: mongoose.Schema.Types.ObjectId,
idInGame: Number,
points: Number,
});
MongoDb连接
mongoose.Promise = global.Promise;
mongoose.connect("mongodb://localhost/ScoreKeeper", { useMongoClient: true });
在邮政路线上初始化游戏和玩家的代码。 (我正在使用Express)
app.post('/', function(req, res) {
let players = Number(req.body.players);
Game.create({
players: [],
}, function(error, newGame) {
if (error) {
console.log(error);
} else {
let currentGameID = newGame._id;
for (let i = 1; i <= players; i++) {
Player.create({
parentGameId: currentGameID,
idInGame: i,
points: 0
}, function(error, newPlayer) {
if (error) {
console.log(error);
} else {
newGame.players.push(newPlayer._id);
newGame.save(function(error, newGame) {
if (error) {
console.log(error);
} else {
console.log("New Player added");
}
});
}
});
}
}
});
});
在节点控制台上的终端上,当我创建5个播放器时,我有以下输出:
新玩家补充道
新玩家补充道
新玩家补充道
新玩家补充道
新玩家补充道
现在,当我进入mongo控制台并查看球员收藏时,我发现有5名球员按预期创建。使用“db.players.find()”
{“_ id”:ObjectId(“5a6159685d3dabb00d0065b0”),“parentGameId”:ObjectId(“5a6159685d3dabb00d0065af”),“idInGame”:1,“points”:0,“__ v”:0}
{“_ id”:ObjectId(“5a6159685d3dabb00d0065b1”),“parentGameId”:ObjectId(“5a6159685d3dabb00d0065af”),“idInGame”:2,“points”:0,“__ v”:0}
{“_ id”:ObjectId(“5a6159685d3dabb00d0065b2”),“parentGameId”:ObjectId(“5a6159685d3dabb00d0065af”),“idInGame”:3,“points”:0,“__ v”:0}
{“_ id”:ObjectId(“5a6159685d3dabb00d0065b3”),“parentGameId”:ObjectId(“5a6159685d3dabb00d0065af”),“idInGame”:4,“points”:0,“__ v”:0}
{“_ id”:ObjectId(“5a6159685d3dabb00d0065b4”),“parentGameId”:ObjectId(“5a6159685d3dabb00d0065af”),“idInGame”:5,“points”:0,“__ v”:0}
但是当我在mongo控制台中检查游戏对象时,我发现这个......
db.games.findOne()
{
"_id" : ObjectId("5a6159685d3dabb00d0065af"), "created" : ISODate("2018-01-19T02:35:20.632Z"), "players" : [ ObjectId("5a6159685d3dabb00d0065b1"), ObjectId("5a6159685d3dabb00d0065b1"), ObjectId("5a6159685d3dabb00d0065b0"), ObjectId("5a6159685d3dabb00d0065b1"), ObjectId("5a6159685d3dabb00d0065b0"), ObjectId("5a6159685d3dabb00d0065b2"), ObjectId("5a6159685d3dabb00d0065b3"), ObjectId("5a6159685d3dabb00d0065b3"), ObjectId("5a6159685d3dabb00d0065b4") ], "__v" : 5
}
游戏和玩家之间存在不匹配,我觉得这个错误是在添加newGame
后保存newPlayer
。奇怪的是,_v
财产按预期读取5。你能指点我修复这个bug吗?
谢谢
在您的代码中保存游戏文档存在一个错误
而不是save
使用update
方法与push
添加ObjectId
s的球员
newGame.update({$push:{players : newPlayer._id} }, function(error, newGame) {...}
控制台出来
Mongoose: games.insert({ _id: ObjectId("5a6168c12478110e7aa74d5d"), created: new Date("Fri, 19 Jan 2018 03:40:49 GMT"), players: [], __v: 0 })
Mongoose: players.insert({ parentGameId: ObjectId("5a6168c12478110e7aa74d5d"), idInGame: 1, points: 0, _id: ObjectId("5a6168c12478110e7aa74d5e"), __v: 0 })
Mongoose: players.insert({ parentGameId: ObjectId("5a6168c12478110e7aa74d5d"), idInGame: 2, points: 0, _id: ObjectId("5a6168c12478110e7aa74d5f"), __v: 0 })
Mongoose: players.insert({ parentGameId: ObjectId("5a6168c12478110e7aa74d5d"), idInGame: 3, points: 0, _id: ObjectId("5a6168c12478110e7aa74d60"), __v: 0 })
Mongoose: players.insert({ parentGameId: ObjectId("5a6168c12478110e7aa74d5d"), idInGame: 4, points: 0, _id: ObjectId("5a6168c12478110e7aa74d61"), __v: 0 })
Mongoose: players.insert({ parentGameId: ObjectId("5a6168c12478110e7aa74d5d"), idInGame: 5, points: 0, _id: ObjectId("5a6168c12478110e7aa74d62"), __v: 0 })
Mongoose: games.update({ _id: ObjectId("5a6168c12478110e7aa74d5d") }, { '$push': { players: ObjectId("5a6168c12478110e7aa74d62") } }, {})
Mongoose: games.update({ _id: ObjectId("5a6168c12478110e7aa74d5d") }, { '$push': { players: ObjectId("5a6168c12478110e7aa74d5f") } }, {})
Mongoose: games.update({ _id: ObjectId("5a6168c12478110e7aa74d5d") }, { '$push': { players: ObjectId("5a6168c12478110e7aa74d61") } }, {})
Mongoose: games.update({ _id: ObjectId("5a6168c12478110e7aa74d5d") }, { '$push': { players: ObjectId("5a6168c12478110e7aa74d60") } }, {})
Mongoose: games.update({ _id: ObjectId("5a6168c12478110e7aa74d5d") }, { '$push': { players: ObjectId("5a6168c12478110e7aa74d5e") } }, {})
mongo CLI
> db.players.find()
{ "_id" : ObjectId("5a6168c12478110e7aa74d5f"), "parentGameId" : ObjectId("5a6168c12478110e7aa74d5d"), "idInGame" : 2, "points" : 0, "__v" : 0 }
{ "_id" : ObjectId("5a6168c12478110e7aa74d61"), "parentGameId" : ObjectId("5a6168c12478110e7aa74d5d"), "idInGame" : 4, "points" : 0, "__v" : 0 }
{ "_id" : ObjectId("5a6168c12478110e7aa74d5e"), "parentGameId" : ObjectId("5a6168c12478110e7aa74d5d"), "idInGame" : 1, "points" : 0, "__v" : 0 }
{ "_id" : ObjectId("5a6168c12478110e7aa74d60"), "parentGameId" : ObjectId("5a6168c12478110e7aa74d5d"), "idInGame" : 3, "points" : 0, "__v" : 0 }
{ "_id" : ObjectId("5a6168c12478110e7aa74d62"), "parentGameId" : ObjectId("5a6168c12478110e7aa74d5d"), "idInGame" : 5, "points" : 0, "__v" : 0 }
>
>
> db.games.find().pretty()
{
"_id" : ObjectId("5a6168c12478110e7aa74d5d"),
"created" : ISODate("2018-01-19T03:40:49.028Z"),
"players" : [
ObjectId("5a6168c12478110e7aa74d62"),
ObjectId("5a6168c12478110e7aa74d5f"),
ObjectId("5a6168c12478110e7aa74d61"),
ObjectId("5a6168c12478110e7aa74d60"),
ObjectId("5a6168c12478110e7aa74d5e")
],
"__v" : 0
}
>