javascript - 蒙哥错误: Field name duplication not allowed with modifiers

Question

注意:据我所知，我不是在做推弹式的事情。

我有这个第一次工作正常，但如果客户端两次调用此方法而没有在两次调用之间刷新页面，我将在标题中得到错误。

scenarios.findOne({'_id':partialUpdate._id},function(err,back){

            if(back){
                for(var p in partialUpdate){
                    if(partialUpdate.hasOwnProperty(p)){
                        back[p] = partialUpdate[p];
                    }
                }
                back.save(function(err,product,numberAffected){...

刷新页面以阻止此错误发生的原因是什么？我如何知道我正在复制哪个字段名称，以便我可以停止此错误？

这是服务器输出的副本，其中包含第一组和第二组发送数据 (partialData)、它合并的服务器数据 (back)，以及保存的数据(product)和错误信息

http://pastebin.com/izbkZV1h

第一组发送对象:

{ sortOrder: 0,
  title: 'sdfsdf',
  description: '',
  contentType: 'false',
  _id: '534ec5c98c4bf1be305fee1c',
  __v: 8,
  groupSharing: [],
  sharingWith: [],
  isPublic: false,
  content: false,
  attributes: [],
  metrics:
   [ { type: 'viewCount',
       value: '1',
       metric: 'Viewed',
       _id: '534ec5c98c4bf1be305fee1e',
       createDate: '2014-04-16T18:02:49.454Z' },
     { type: 'playCount',
       value: '1',
       metric: 'Played',
       _id: '534ec5c98c4bf1be305fee1d',
       createDate: '2014-04-16T18:02:49.453Z' } ],
  bundleId: [],
  video:
   [ { videoLocation: 'rtmp://xxxxxxxxxxxxxxxxxxx.cloudfront.net/cfx/st/vid_51323386'
,
       thumbnailLocation: 'https://xxxxxxxxxxxxxxxxxxx.cloudfront.net/thumb_51323386.
png',
       _id: '534ec5c98c4bf1be305fee20',
       createDate: '2014-04-16T18:02:49.457Z',
       format: 'FLV' } ],
  display: true,
  active: true,
  createDate: '2014-04-16T18:02:49.000Z',
  revision: 1,
  scripts:
   [ { _id: '534ec5c98c4bf1be305fee1f',
       display: true,
       active: true,
       createDate: '2014-04-16T18:02:49.454Z',
       keyPoints: [],
       body: [Object],
       subject: [] } ],
  presentation:
   [ { pageLocation: null,
       _id: '534ec5c98c4bf1be305fee21',
       display: true,
       active: true,
       syncManifest: [],
       pageNumber: [Object] } ],
  subcategoryId: [ '53236dff2ab8b9182716f34d' ],
  categoryId: [ '532369bb2ab8b9182716f33d' ],
  authorId: [ '532c9a146ce0682319cebbf9' ] }

它应该覆盖的服务器上的对象:

 { sortOrder: 0,
  title: 'sdfsdf',
  description: '',
  contentType: 'false',
  _id: 534ec5c98c4bf1be305fee1c,
  __v: 8,
  groupSharing: [],
  sharingWith: [],
  isPublic: false,
  content: false,
  attributes: [],
  metrics:
   [ { type: 'viewCount',
       value: '1',
       metric: 'Viewed',
       _id: 534ec5c98c4bf1be305fee1e,
       createDate: Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight Time) },

     { type: 'playCount',
       value: '1',
       metric: 'Played',
       _id: 534ec5c98c4bf1be305fee1d,
       createDate: Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight Time) }
],
  bundleId: [],
  video:
   [ { videoLocation: 'rtmp://xxxxxxxxxxxxxxxxxxx.cloudfront.net/cfx/st/vid_51323386'
,
       thumbnailLocation: 'https://xxxxxxxxxxxxxxxxxxxxcloudfront.net/thumb_51323386.
png',
       _id: 534ec5c98c4bf1be305fee20,
       createDate: Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight Time),
       format: 'FLV' } ],
  display: true,
  active: true,
  createDate: Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight Time),
  revision: 1,
  scripts:
   [ { _id: 534ec5c98c4bf1be305fee1f,
       display: true,
       active: true,
       createDate: Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight Time),
       keyPoints: [],
       body: [Object],
       subject: [] } ],
  presentation:
   [ { pageLocation: null,
       _id: 534ec5c98c4bf1be305fee21,
       display: true,
       active: true,
       syncManifest: [],
       pageNumber: [Object] } ],
  subcategoryId: [ 53236d392ab8b9182716f341 ],
  categoryId: [ 532368bc2ab8b9182716f339 ],
  authorId: [ 532c9a146ce0682319cebbf9 ] }

结果对象:

    { sortOrder: 0,
  title: 'sdfsdf',
  description: '',
  contentType: 'false',
  _id: 534ec5c98c4bf1be305fee1c,
  __v: 9,
  groupSharing: [],
  sharingWith: [],
  isPublic: false,
  content: false,
  attributes: [],
  metrics:
   [ { type: 'viewCount',
       value: '1',
       metric: 'Viewed',
       _id: 534ec5c98c4bf1be305fee1e,
       createDate: Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight Time) },

     { type: 'playCount',
       value: '1',
       metric: 'Played',
       _id: 534ec5c98c4bf1be305fee1d,
       createDate: Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight Time) }
],
  bundleId: [],
  video:
   [ { videoLocation: 'rtmp://xxxxxxxxxxxxxxxxxxx.cloudfront.net/cfx/st/vid_51323386'
,
       thumbnailLocation: 'https://xxxxxxxxxxxxxxxxxxx.cloudfront.net/thumb_51323386.
png',
       _id: 534ec5c98c4bf1be305fee20,
       createDate: Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight Time),
       format: 'FLV' } ],
  display: true,
  active: true,
  createDate: Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight Time),
  revision: 1,
  scripts:
   [ { _id: 534ec5c98c4bf1be305fee1f,
       display: true,
       active: true,
       createDate: Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight Time),
       keyPoints: [],
       body: [Object],
       subject: [] } ],
  presentation:
   [ { pageLocation: null,
       _id: 534ec5c98c4bf1be305fee21,
       display: true,
       active: true,
       syncManifest: [],
       pageNumber: [Object] } ],
  subcategoryId: [ 53236dff2ab8b9182716f34d ],
  categoryId: [ 532369bb2ab8b9182716f33d ],
  authorId: [ 532c9a146ce0682319cebbf9 ] }

我注意到的一个区别是，我没有向它发送一个 ObjectID 数组，而是向它发送一个字符串数组，而不是像 Wed Apr 16 2014 12:02:49 GMT-0600 (Mountain Daylight时间) 我发送它 2014-04-16T18:02:49.454Z。那有关系吗？

Answer 1

修复它:

https://github.com/LearnBoost/mongoose/issues/1933

我明确地保存了 __v 属性，这是一个禁忌。

在我的循环中，我只是检查 p 是否等于 __v，如果是，我将忽略它。没问题了。