將產品添加到mongoDB時出現此錯誤

這是包含架構的檔案

let mongoose = require('mongoose');
let Schema = mongoose.Schema;

const productSchema = new Schema({
    _id: {
        type: Number,
        required: true
    },
    product_name: {
        type: String,
        required: true
    },
    price: {
        type: String,
        required: true
    },
    quantity: {
        type: Number,
        required: true
    },
    product_collection: {
        type: String,
        required: true,
        enum: ['Nike' , 'Addidas']
    },
    product_image_url: {
        type: String,
        required: true
    },
    product_type: [
        {
            color: {
                type: String,
                required: true,
            }
        },
        {
            size: {
                type: Number,
                required: true,
                enum: ['40', '41' , '42']
            }
        }
    ]
})

const Product = mongoose.model('Product' , productSchema);

module.exports = Product;

這是我要創建產品的種子檔案

//Require Models
const mongoose = require('mongoose');

//Require Models
const Product = require('./models/product');

//Connecting to DB server
mongoose.connect('mongodb://localhost:27017/ecom', {
    useNewUrlParser: true,
    useUnifiedTopology: true,
})
    .then(() => {
        console.log('DATABASE CONNECTED')
    })
    .catch(err => {
        console.log('SOMETHING WENT WRONG WITH MONGO')
        console.log(err)
    })

    const p = new Product({
        _id: 1,
        product_name: 'Nike HyperVenom',
        price: 150,
        quantity: 30,
        product_collection: 'Nike',
        product_image_url: 'zzzzz',
        product_type: [
            {
                color: 'red'
            },
            {
                size: [41 , 42]
            }
        ]
    })

    p.save().then(p => {
        console.log(p)
    })
    .catch(e => {
        console.log(e)
    })

這是控制臺中顯示的錯誤。

Error: Product validation failed: product_type.1.color: Path `color` is required

 errors: {
    'product_type.1.color': ValidatorError: Path `color` is required.
        at validate (C:\Users\hadiz\Desktop\Business\portfolioprojects\ecommerce
\node_modules\mongoose\lib\schematype.js:1277:13)
        at C:\Users\hadiz\Desktop\Business\portfolioprojects\ecommerce\node_modu
les\mongoose\lib\schematype.js:1260:7
        at Array.forEach (<anonymous>)
        at SchemaString.SchemaType.doValidate (C:\Users\hadiz\Desktop\Business\p
ortfolioprojects\ecommerce\node_modules\mongoose\lib\schematype.js:1210:14)
        at C:\Users\hadiz\Desktop\Business\portfolioprojects\ecommerce\node_modu
les\mongoose\lib\document.js:2690:18
        at processTicksAndRejections (node:internal/process/task_queues:76:11) {
      properties: [Object],
      kind: 'required',
      path: 'color',
      value: undefined,
      reason: undefined,
      [Symbol(mongoose:validatorError)]: true
    }
  },
  _message: 'Product validation failed'
}

知道如何解決這個問題，我是 mongoose 和 mongoDB 的初學者。我認為問題出在 product_type 部分，我是否在種子檔案中以正確的方式給了他們一個值？

uj5u.com熱心網友回復：

product_type架構中的物件表明其中的每個物件都必須有一個color鍵值對。錯誤是關于product_type（索引 1）中的第二個物件沒有color鍵。您應該product_type從陣列更改為物件。IE

product_type: {
    color: {
        type: String,
        required: true,
    },
    size: [{
        type: Number,
        required: true,
        enum: [40, 41, 42]
    }],
}

你的輸入應該變成：

product_type: {
    color: "red",
    size: [41, 42],
}

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