猫鼬/nodejs中的验证错误

Question

When I want to add products to the database (MongoDB) . The program is in loop mode and does not crash, but it shows the error in the console.

Console content included on the bottom

models/single-product.js

 // models/single-product.js const mongoose = require('mongoose') const Schema = mongoose.Schema const productSchema = new Schema({ title: { type: String, required: true }, description: { type: String, required: true }, price: { type: Number, required: true }, userId: { type: Schema.Types.ObjectId, ref: 'User', required: true } }) module.exports = mongoose.model('Product', productSchema)

models/user.js

 // models/user.js const mongoose = require('mongoose') const Schema = mongoose.Schema const userSchema = new Schema({ username: { type: String , required: true }, email: { type: String , required: true }, cart: { items:[ { productId: { type: Schema.Types.ObjectId, ref: 'Product', required: true }, qty:{ type: Number , required: true } } ] } }) module.exports =mongoose.model('User', userSchema)

controllers/admin.js

 // constrollers/admin.js const Product = require('../models/single-product') module.exports.addProductsPage = (req,res)=> { res.render('admin/add-product',{ pageTitle: "Add Product-Page" }) } module.exports.sendProducts = (req,res)=>{ const title = req.body.title const description = req.body.description const price = req.body.price const products = new Product({ title: title, description: description , price: price, userId: req.user }) products.save() .then(result =>{ console.log('Product Created!') res.redirect('/admin/add-product') }) .catch(err =>{ console.log(err) }) } module.exports.getProducts = (req,res)=>{ Product.find() .then(products =>{ res.render('admin/products',{ productsArray : products, pageTitle : 'Admin Products' }) }) .catch(err =>{ console.log(err) }) } module.exports.deleteProduct = (req,res)=>{ const pId = req.body.productId Product.findByIdAndRemove(pId) .then(()=>{ console.log('Product Deleted!') res.redirect('products') }) .catch(err =>{ console.log(err) }) }

Error [ValidationError]: Product validation failed: userId: Path `userId` is required.
at ValidationError.inspect (D:\Alireza\web\Test project's\OnlineShop-Node.js\node_modules\mongoose\lib\error\validation.js:59:24)
at formatValue (internal/util/inspect.js:550:31)
at inspect (internal/util/inspect.js:221:10)
at formatWithOptions (internal/util/inspect.js:1651:40)
at Object.Console.<computed> (internal/console/constructor.js:272:10)
at Object.log (internal/console/constructor.js:282:61)
at D:\Alireza\web\Test project's\OnlineShop-Node.js\controllers\admin.js:25:17
at processTicksAndRejections (internal/process/task_queues.js:85:5) {

errors: { userId: MongooseError [ValidatorError]: Path userId is required. at new ValidatorError (D:\Alireza\web\Test project's\OnlineShop-Node.js\node_modules\mongoose\lib\error\validator.js:29:11) at validate (D:\Alireza\web\Test project's\OnlineShop-Node.js\node_modules\mongoose\lib\schematype.js:1034:13) at D:\Alireza\web\Test project's\OnlineShop-Node.js\node_modules\mongoose\lib\schematype.js:1088:11 at Array.forEach () at ObjectId.SchemaType.doValidate (D:\Alireza\web\Test project's\OnlineShop-Node.js\node_modules\mongoose\lib\schematype.js:1043:14) at D:\Alireza\web\Test project's\OnlineShop-Node.js\node_modules\mongoose\lib\document.js:2134:9 at processTicksAndRejections (internal/process/task_queues.js:75:11) { message: 'Path userId is required.', name: 'ValidatorError', properties: [Object], kind: 'required', path: 'userId', value: undefined, reason: undefined, [Symbol(mongoose:validatorError)]: true } }, _message: 'Product validation failed', name: 'ValidationError' }

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Answer 1

Please check This Section of Code in controllers/admin.js.

const products = new Product({
        title: title,
        description: description ,
        price: price,
        userId: req.user
    })

you are inserting the userId with an undefined or null value. I think req.user is undefined and as you defined the schema of userId column with required true constraints in you model:

userId: {
        type: Schema.Types.ObjectId,
        ref: 'User',
        required: true
    }

Please check this log before inserting the data

console.log(req.user);

Answer 2

First check if req.user is not null, then save product using

const products = new Product({
        title: title,
        description: description ,
        price: price,
        userId: mongoose.Types.ObjectId(req.user);
    })

you need to make userId as objectID

Answer 3

Change the Content-Type property which by default is text/plain. because of this text/plain mongodb doesn't validate your request.

Content-Type: text/plain; // Previous Value
Content-Type: application/json // Changed value