使用 $PUSH 更新在 Mongoose + Express + Node 中不起作用

Question

此代码正在从 API 服务中正确获取 JSON 数据，但未更新 MongoDB 中的嵌套文档，几乎尝试了一切

 api.squad(matchid, function(datapack) { 
   var data = JSON.parse(datapack);

    for (var i = 0; i < data.squad.length; i++) {
      players = data.squad[i].players;

      for(var j = 0; j < players.length; j++){

        console.log(players[j]);  // Working Fine Till here , Data from api showing here in console

        var player = { pid: players[j].pid, name: players[j].name };
        squadModel.update(              
          { leagueId: leagueId }, 
          {$push: {players: player} }       // This Update is Not Working
        );

      }
    }
  });

代码的架构如下。

    // Squad Players  -- Sub Schema of Squad
var squadPlayersSchema = mongoose.Schema({
    pid:{
      type: Number,
      required: true
    },
    name:{
      type: String,
      required: true
    },
    type:{
        type: String,
    },
    cost:{
        type: Number,
    },
    country:{
        type: String,
    },
    status : {
        type:Boolean,
        default:false
    }
  });


// Squad Schema
var squadSchema = mongoose.Schema({

    leagueId:{
        type: mongoose.Schema.Types.ObjectId,
        ref :'leagueModel',
        required: true
    },
    players : [squadPlayersSchema],
    isLaunched : {
        type:Boolean,
        default:false
    }

});

var squads = module.exports = mongoose.model('squads', squadSchema);

请帮助这个东西刚刚拒绝工作。更新查询在 MongoDB GUI Studio3T Shell

中运行良好

Studio3T 中的演示查询示例运行并且工作正常并且使用上面的代码更新文档没有。

db.squads.update(
              { "leagueId": ObjectId("5a85900d8b3b30165875ff0d") }, 
              {
                "$push": {
                  "players":  { pid: 1234567, name: "Some Name" }
                }
              }
            );

Answer 1

使用$each with $addToSet如下：

api.squad(leagueId, datapack => { 
    const data = JSON.parse(datapack);
    let updates = []; // array to hold updates promises

    data.squad.forEach(squad => { // iterate the data.squad array to get the players list

        let promise = squadModel.findOneAndUpdate(              
            { leagueId: leagueId }, 
            { '$addToSet': { 'players': { '$each': squad.players } } },
            { 'upsert': true }
        ); // update operation as a promise
        updates.push(promise);
    });

    Promise.all(updates).then(console.log).catch(console.error); // resolves when all of the updates promises have resolved 
});

使用 $PUSH 更新在 Mongoose + Express + Node 中不起作用

Update with $PUSH is not working in Mongoose + Express + Node

mongoose

mongodb

node.js

express

mongoose-schema