Question

我在将一些数据保存到mongoose数据库时遇到了麻烦。您可以找到我的模型和控制器的所有信息。问题是我希望保留一组喜欢特定帖子的用户，因此我将他们的ObjectId保存在数组中，另外我在模型中指定为[{ type: Schema.Types.ObjectId, ref: 'User' }]。

我在操作数据之前和之后记录，它给了我想要的输出：

The likes value of the found gif:  []
Document Id is:  59c3122632af313ff3a9d962
User not liked yet!
New likes value:  ["59c3122632af313ff3a9d962"]

仍然，它告诉我以下验证错误：

ValidationError: Gif validation failed: likes: Cast to Array failed for value "1" at path "likes"

如果你指出我的代码中有什么问题，我们将不胜感激。最好！

这是我的控制器：

export function handleLike(req, res) {
  // We will need the uid of the liking user and cuid of the liked gif
  Gif.findOne({ cuid: req.body.cuid }).exec((err, gif) => {
    if (err) {
      res.status(500).send(err)
      console.log('Error while the gif is being found.')
    }
    console.log('The likes value of the found gif: ', gif.likes)
    User.findOne({ uid: req.body.uid }).exec((e, user) => {
      if (e) {
        res.status(500).send(err)
        console.log('Error while user is being found.')
      }
      const userDocumentId = user._id
      console.log('Document Id is: ', userDocumentId)
      const isUserLiked = gif.likes.includes(userDocumentId)
      console.log('User not liked yet!')
      if (isUserLiked) {
        const newLikeArray = gif.likes.filter(like => like !== userDocumentId)
        gif.set({ likes: newLikeArray })
      } else {
        const newLikeArray = gif.likes.push(userDocumentId)
        gif.set({ likes: newLikeArray })
      }
      console.log('New likes value: ', gif.likes)
      gif.save((error, newGif) => {
        console.log(gif)
        if (error) {
          res.status(500).send(error)
          console.log('Error while saving the gif.')
          console.log(error)
        }
        res.send(newGif)
      })
    })
  })
}

这是我的模特：

const GifSchema = Schema({
  // In case there may occur a problem with Google Cloud Upload, make URL required!
  id: { type: String, required: true },
  crop_start: { type: Number, required: true },
  crop_finish: { type: Number, required: true },
  meme: String,
  tags: [String],
  url: { type: String },
  cuid: { type: 'String' },
  uploaded: { type: Date, default: Date.now },
  disabled: { type: Boolean, default: false },
  likes: [{ type: Schema.Types.ObjectId, ref: 'User' }],
  owner: { type: Schema.Types.ObjectId, ref: 'User' },
  customWidth: Number,
  customHeight: Number,
})

控制台输出和错误如下所示：

The likes value of the found gif:  []
Document Id is:  59c3122632af313ff3a9d962
User not liked yet!
New likes value:  ["59c3122632af313ff3a9d962"]
{ _id: 59c3d98b65fcef2f9ad60230,
  owner: 59c3122632af313ff3a9d962,
  customHeight: 180,
  customWidth: 320,
  url: 'http://res.cloudinary.com/de9nq41ka/video/upload/v1506007487/js4pnuezelrtitxnbovd.mp4',
  cuid: 'cj7ulxyg40000eixhum3hjqbr',
  id: 'gmn1no0lEuk',
  crop_start: 0.35503994850158693,
  crop_finish: 2.407723893188477,
  meme: '',
  __v: 0,
  likes: [ 59c3122632af313ff3a9d962 ],
  disabled: false,
  uploaded: 2017-09-21T15:23:55.653Z,
  tags: [ 'hayvan', 'tatlı', 'komik', 'eglenceli' ] }
Error while saving the gif.
{ ValidationError: Gif validation failed: likes: Cast to Array failed for value "1" at path "likes"
    at ValidationError.inspect (/home/ugur/Desktop/gifl.io/react-webpack/node_modules/mongoose/lib/error/validation.js:57:23)
    at formatValue (util.js:357:36)
    at inspect (util.js:221:10)
    at format (util.js:98:24)
    at Console.log (console.js:127:21)
    at /home/ugur/Desktop/gifl.io/react-webpack/src/server/controllers/gif.controller.js:101:19
    at /home/ugur/Desktop/gifl.io/react-webpack/node_modules/mongoose/lib/model.js:3835:16
    at /home/ugur/Desktop/gifl.io/react-webpack/node_modules/mongoose/lib/services/model/applyHooks.js:167:17
    at _combinedTickCallback (internal/process/next_tick.js:131:7)
    at process._tickDomainCallback (internal/process/next_tick.js:218:9)
  errors:
   { likes:
      { CastError: Cast to Array failed for value "1" at path "likes"
          at CastError (/home/ugur/Desktop/gifl.io/react-webpack/node_modules/mongoose/lib/error/cast.js:27:11)
          at model.Document.set (/home/ugur/Desktop/gifl.io/react-webpack/node_modules/mongoose/lib/document.js:766:7)
          at model._handleIndex (/home/ugur/Desktop/gifl.io/react-webpack/node_modules/mongoose/lib/document.js:598:14)
          at model.Document.set (/home/ugur/Desktop/gifl.io/react-webpack/node_modules/mongoose/lib/document.js:558:24)
          at /home/ugur/Desktop/gifl.io/react-webpack/src/server/controllers/gif.controller.js:93:13
          at /home/ugur/Desktop/gifl.io/react-webpack/node_modules/mongoose/lib/query.js:2922:18
          at <anonymous>
          at process._tickDomainCallback (internal/process/next_tick.js:228:7)
        message: 'Cast to Array failed for value "1" at path "likes"',
        name: 'CastError',
        stringValue: '"1"',
        kind: 'Array',
        value: 1,
        path: 'likes',
        reason: [Object] } },
  _message: 'Gif validation failed',
  name: 'ValidationError' }

Answer 1

您传递的是错误的参数，就好像您正在使用react的setState：

gif.set({ likes: newLikeArray })

根据API，您应该单独传递path和value：

Document#set(path, val, [type], [options])  
设置路径或多条路径的值   参数：
  路径路径或键/对象设置
  val要设置的值
  [type]可选择指定“on-the-fly”属性的类型
  [options]可选择指定修改集合
行为的选项

使用：

gif.set('likes', newLikeArray)

或：

gif.likes = newLikeArray

Gif验证失败：喜欢：Cast to Array因值而失败＆＃34; 1＆＃34;在路径＆＃34;喜欢＆＃34;

1 个答案: