如何从流星光标获取文档_id？

我现在已经对我的问题有了更多的了解，所以我已经重写了这个问题。下面的答案仍然很重要。

我有以下查询，它返回一条记录。

Template.game.helpers({
  Game: function () {

  var myGame = Games.findOne(
      {
        game_minutes: {$gt: MinutesSinceMidnightNow},
        court_id: court,
        game_date: {$gt: lastMidnight}
      }, 
      {
        sort: {game_minutes: 1}
      }
      ); // find

  console.log(myGame);

  console.log(myGame._id);

  return myGame;

 } // game function
});  //template  scoreboard.helpers

Meteor.startup(function () {

    Meteor.call('removeGames', court, MinutesSinceMidnightNow);

    for(var i=0;i<incomingGames.length;i++){

        var game = incomingGames[i];

        var gameTime = game.game_time;

        if ( MinutesSinceMidnightGameTime(gameTime) > MinutesSinceMidnightNow ) {

           console.log("game # " + i + ' game time ' + MinutesSinceMidnightGameTime(gameTime) + ' now' + ' ' + MinutesSinceMidnightNow);

           Meteor.call('insertGame', game);

           }  // if
      }  // for

//       game = Meteor.call("nextGame", MinutesSinceMidnightNow, court, lastMidnight);

      console.log(MinutesSinceMidnightNow + ', ' + court + ', ' + lastMidnight);

    }); // startup

第一个console.log显示了一个包含_id属性的游戏对象。第二个控制台日志将引发错误。如何获得_id值？

在仔细考虑之后，代码可能会真正起作用。控制台日志最终会显示ID号。奇怪的是，游戏在服务器启动中插入之前发生了错误。我猜想客户端是在服务器之前启动的，然后在服务器启动后与实际数据进行对齐？这很难使我摆脱传统的Web开发的束缚。

这是控制台输出

undefined scoreboard.js?c19ff4a1d16ab47e5473a6e43694b3c42ec1cc22:118
Exception in template helper: TypeError: Cannot read property '_id' of undefined
    at Object.Template.game.helpers.Game (http://localhost:3000/client/scoreboard/scoreboard.js?c19ff4a1d16ab47e5473a6e43694b3c42ec1cc22:122:19)
    at http://localhost:3000/packages/blaze.js?88aac5d3c26b7576ac55bb3afc5324f465757709:2693:16
    at http://localhost:3000/packages/blaze.js?88aac5d3c26b7576ac55bb3afc5324f465757709:1602:16
    at Object.Spacebars.call (http://localhost:3000/packages/spacebars.js?3c496d2950151d744a8574297b46d2763a123bdf:169:18)
    at Template.game.HTML.DIV.Spacebars.With.HTML.SPAN.class (http://localhost:3000/client/scoreboard/template.scoreboard.js?0ad2de4b00dfdc1e702345d82ba32c20d943ac63:16:22)
    at null.<anonymous> (http://localhost:3000/packages/spacebars.js?3c496d2950151d744a8574297b46d2763a123bdf:261:18)
    at http://localhost:3000/packages/blaze.js?88aac5d3c26b7576ac55bb3afc5324f465757709:1795:16
    at Object.Blaze._withCurrentView (http://localhost:3000/packages/blaze.js?88aac5d3c26b7576ac55bb3afc5324f465757709:2029:12)
    at viewAutorun (http://localhost:3000/packages/blaze.js?88aac5d3c26b7576ac55bb3afc5324f465757709:1794:18)
    at Tracker.Computation._compute (http://localhost:3000/packages/tracker.js?192a05cc46b867dadbe8bf90dd961f6f8fd1574f:288:36) debug.js:41
game # 0 game time 1395 now 549 scoreboard.js?c19ff4a1d16ab47e5473a6e43694b3c42ec1cc22:148
game # 1 game time 1110 now 549 scoreboard.js?c19ff4a1d16ab47e5473a6e43694b3c42ec1cc22:148
game # 2 game time 1185 now 549 scoreboard.js?c19ff4a1d16ab47e5473a6e43694b3c42ec1cc22:148
game # 3 game time 1260 now 549 scoreboard.js?c19ff4a1d16ab47e5473a6e43694b3c42ec1cc22:148
549, 1, Wed Oct 22 2014 00:00:00 GMT+0930 (CST) scoreboard.js?c19ff4a1d16ab47e5473a6e43694b3c42ec1cc22:157
Object {_id: "scYEdthygZFHgP2G9", court_id: 1, game_date: Wed Oct 22 2014 09:09:50 GMT+0930 (CST), court_name: "Court 1", game_time: "18:30"…} scoreboard.js?c19ff4a1d16ab47e5473a6e43694b3c42ec1cc22:118
scYEdthygZFHgP2G9