參考另一個模式時mongoDB中的驗證錯誤？

我在 mongo 中創建了一個博客模式，它參考了用戶模式。但是，當我嘗試在 MongoDB 中保存博客時，出現以下錯誤：-

CUrrrent post user:  new ObjectId("61d28db34c78f60375189033")
User validation failed: passwordHash: Path `passwordHash` is required., name: Path `name` is required., username: Path `username` is required.

我通過 JSON 發送這個

{
        "title": "Best Copywriting formulas!",
        "author": "Copywriters Inc.",
        "url": "https://buffer.com/resources/copywriting-formulas/",
        "likes": 420
    }

當我沒有向用戶架構添加任何新內容時，我無法解碼為什么會出現此驗證錯誤。

這是我的主要路由器代碼：-

blogRouter.post('/', async (request, response) => {
    const blog = new Blog(request.body)

    if (blog.author === undefined || blog.title === undefined)
        return response.status(400).json({
            error: "name or title missing!"
        })

    //temporary get the first user from the Users db
    const userDB = await User.find({});
    //Get the first available user in db
    const currentUser = userDB[0]._id;

    console.log('CUrrrent post user: ', currentUser);

    const newBlog = new User({
        title: request.body.title,
        author: request.body.author,
        url: request.body.url,
        likes: request.body.likes || 0,
        user: currentUser
    })

    try {
        const newEntry = await newBlog.save()
        response.status(200).json(newEntry);
    } catch (error) {
        logger.error(error.message);
    }
})

我的博客架構：-

const blogSchema = new mongoose.Schema({
  title: String,
  author: String,
  url: String,
  likes: {
    type: Number,
    default: 0
  },
  user: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User'
  }
})

blogSchema.set('toJSON', {
  transform: (document, returnedObject) => {
    returnedObject.id = returnedObject._id.toString()
    delete returnedObject._id
    delete returnedObject.__v
  }
})

module.exports = mongoose.model('Blog', blogSchema)

這是我的用戶架構：-

var uniqueValidator = require('mongoose-unique-validator');

const userSchema = new mongoose.Schema({
    username: {
        type: String,
        required: true,
        minLength: 3,
        unique: true
    },
    name: {
        type: String,
        required: true
    },
    passwordHash: {
        type: String,
        required: true
    }
})

userSchema.plugin(uniqueValidator, {message: 'username already taken. {VALUE} not available.'});

userSchema.set('toJSON', {
    transform: (document, returnedObject) => {
        returnedObject.id = returnedObject._id.toString()
        delete returnedObject._id
        delete returnedObject.__v
        delete returnedObject.passwordHash
    }
})

const User = mongoose.model('User', userSchema);
module.exports = User

uj5u.com熱心網友回復：

創建新Blog檔案時，您應該更改模型名稱：

  const newBlog = new Blog({
    title: request.body.title,
    author: request.body.author,
    url: request.body.url,
    likes: request.body.likes || 0,
    user: currentUser,
  });

此外，一個好的做法是在檢索第一個用戶之前檢查資料庫中是否有任何用戶。這是為了避免可能的索引越界例外：

const userDB = await User.find({});
if (userDB.length > 0) {
    const currentUser = userDB[0]._id;
    ...

標籤：javascript 节点.js MongoDB 猫鼬 猫鼬模式

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