使用嵌套数组时更新 Meteor 配置文件 [重复]

Question

我在 Meteor 用户个人资料中有以下内容：

{
  "_id": "dwdtWPFjugF3sTLmE",
  "emails": [
    {
      "address": "armin@four1five.com",
      "verified": false
    }
  ],
  "profile": {
    "name": "Armin",
    "tasks": [
      {
        "task": "Task one",
        "completed": false,
        "created": "2017-10-16T18:48:21.331Z"
      },
      {
        "task": "Task Two",
        "completed": false,
        "created": "2017-10-16T18:48:25.898Z"
      }
    ]
  },
  "username": "armin"
}

如何通过“created”查询，并更新“completed”字段？或者我的方法有什么问题：

Meteor.users.update(
      { _id: Meteor.userId(), "profile.tasks.created": created },
      {
          $set: {
              'profile.tasks.completed': completed
          }
      }
    );

Answer 1

你的

$set: {
    'profile.tasks.completed': completed
}

应该像这样使用positional operator '$'：

$set: {
    'profile.tasks.$.completed': completed
}