MongoDB ObjectId usage

I'm using MongoDB with Mongoose ODM for my NodeJS REST project:

my model schema is:

var playerSchema = new mongoose.Schema({
    name: String,
    team: mongoose.Schema.Types.ObjectId
})

and server side:

app.post('/players', function(req, res) {
  Players.find(function(err, players) {
    res.json(players);
  });
});

the response is:

...
{
  "_id": "511a6010e6ca7b0fe0af02ff",
  "name": "player-1",
  "team": "511a53e2e6ca7b151c09ce8d"
}
...

but I want something like:

{
  "_id": "511a6010e6ca7b0fe0af02ff",
  "name": "player-1",
  "team": {
    _id: "511a53e2e6ca7b151c09ce8d"
    name: "team-1"
  }
}

What I'm doing wrong? or I haven't really understood the ObjectId?

Thanks!

You are only fetching the players document which have id of team document.

So for each player you have to get team doc also.

Players.find(function(err, players) {
   for(var i in players){
      Team.findById(players[i].team,function(error,teams){
          players[i].team = teams;
      })
   }
    res.json(players);
});