MongoDB更新嵌套数组中每个对象的属性

Question

我试图一次性为给定团队中的每个玩家增加caps属性。

每个团队的结构如下：

{
  name: "Real Madrid",
  players: [ { p_id: "Ronaldo", goal: 135, caps: 134, age: 28 },
             { p_id: "Bale", goal: 75, caps: 45, age: 27 },
             { p_id: "Marcelo", goal: 11, caps: 25, age: 31 },
          { p_id: "Benzema", goal: 125, caps: 95, age: 22 } 
  ]
}

我只能找到有关如何一次更新一个嵌套记录的说明。

db.teams.update({ name: "Real Madrid", "players.p_id" : Ronaldo },
{ $inc : { players.$.caps : 1 });

我可以一次更新所有记录吗？我可以

我会在这里为其他人提供解决方案：

var bulk = db.teams.initializeOrderedBulkOp(),   
count = 0;

db.teams.find({ name: "Real Madrid" }).forEach( function(doc) {
var players = doc["players"];

    for( var i = 0; i < players.length; i++) {
        bulk.find(
            {
                "_id": doc._id,
                "players" : { $elemMatch : { "goal" : players[i]["goal"] }}
            }).update({ 
                $inc : { "players.$.goal" : 3 } 
            });
    }

    bulk.execute();
});