在MongoDB中插入/插入嵌套文档

Question

I'm trying to upsert a nested document (activities) in a structure similar to

{
  "_id" : "123",
  "modules" : {
    "x" : {
    },
    "y" : {
      "activities" : {
        "preview": {
          "createdAt": "2014-10-13 15:21:22.113",
          "data": {}
        }
      }
    },
    "z" : {
      "activities" : {
        "render": {
          "createdAt": "2014-10-15 04:22:25.171",
          "data": {}
        },
        "render": {
          "createdAt": "2014-10-14 02:42:24.132",
          "data": {}
        }
      }
    }
  }
}

I then try

selector = { "_id": id, "modules": module, "activities" }
activity = { "preview": { "data": data }}
Meteor.users.upsert(selector, { $set: activity, $setOnInsert: { "createdAt: new Date()" }})

Which yields

MongoError: insertDocument :: caused by :: 11000 E11000 duplicate key error index: meteor.users.$_id_  dup key: { : "123" }

_id is a unique index key. There are additional fields/documents on the _id 'level' of each user and on the activities 'level' of each module, but none concerning the upsert. Each module is unique. The activities document doesn't exist before the first record is inserted.

With that, I hope someone gets the gist of what I'm trying to accomplish and can help me in the right direction.

Answer 1

Upsert is for insert or update(if exist) a new document. It does not apply for a sub-document.

You should just update your document:

selector = { "_id": id, "modules": module, preview : null }
activity = { "preview": { "data": data , "createdAt" : new Date() }}
Meteor.users.update(selector, { $set: 'activity' : activity }})