Question

当我想将文档添加到mongoDB数据库时，我试图找出究竟发生了什么。

当我尝试添加文档时，我收到此错误：

{
 "errors": {
 "name": {
 "message": "Path `name` is required.",
 "name": "ValidatorError",
 "properties": {
 "type": "required",
 "message": "Path `{PATH}` is required.",
 "path": "name"
    },
 "kind": "required",
 "path": "name"
   }
  },
 "message": "Product validation failed",
 "name": "ValidationError"
 }

所以我使用Express Js和Mongoose来执行此操作。在我的模型中：product.js

var mongoose = require('mongoose'); 

var productSchema = new mongoose.Schema({
name: {type: String, required: true}, 
category: {type: String, default: ''}, 
price: { type: Number, default: 0}, 
picture: { type: String}, 
quantity: {type: Number, default: 0}, 
status: { 
    type: String, 
    enum: ['pending', 'In Progress', 'Cancelled', 'Done'], 
    default: 'pending' 
}, 
date: { type: Date, default: Date.now}, 
description: { type: String}, 
owner: {type: String}
}); 

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

module.exports = Product;

在我的api路由中，当我定义执行此操作的路径时： index.js

var express = require('express'); 
var router = express.Router(); 
var productCtrl = require('../controllers/productCtrl'); 

router.get('/products', productCtrl.getAllProducts); 
router.get('/products/:productId', productCtrl.readProduct); 
router.post('/products', productCtrl.createProduct); 
router.delete('/products/:productId', productCtrl.removeProduct); 
router.put('/products/:productId', productCtrl.updateProduct); 

module.exports = router;

最后，在我的控制器文件中： productCtrl.js

var Product = require ('../models/products'); 
var sendJsonResponse = function(res, status, content) {
  res.status(status);
  res.json(content);
}
module.exports.createProduct = function (req, res){
Product
      .create({
        name: req.body.name, 
        category: req.body.category, 
        price: req.body.price, 
        picture: req.body.picture, 
        quantity: req.body.quantity,
        status: req.body.status, 
        date: req.body.date, 
        description: req.body.description, 
        owner: req.body.owner

      }, function createProduct(err, product){
        if(err){
            sendJsonResponse(res, 404, err); 
            return; 
        }
        else {
            sendJsonResponse(res, 201, product); 
        }
      });
 }

行为除外是我应该以json格式返回产品文档

关于我的环境，我使用：

node.js version: 6.9.4
mongodb version: 3.4.4
express version: ~4.13.4
mongoose version: ^4.9.8

我真的需要帮助人

Answer 1

该异常意味着模型中的字段“name”是必需的（您设置required = true），但未提供，表示您将null或undefined传递给它

.create({
    name: req.body.name,

req.body.name可能未定义。检查您的POST操作并尝试console.log（req.body）以查看它是否已填充。

Answer 2

该例外意味着该字段＆＃34; name＆＃34;在你的模型中是必需的（你设置required = true），检查你的req.body.name POST动作。

express-validator模块，用于执行数据的验证和清理，以避免此问题。像这样：

V_new = V_old + M * N

你可以试试这个：
productCtrl.js

 req.checkBody('name', 'Product name required').notEmpty(); 
 var errors = req.validationErrors();
  //Run the validators
  var errors = req.validationErrors();
if (errors) {
    //If there are errors  data form invalid
    res.send('');
return;
} 
else {
    // Data from form is valid.
 }

无法将文档添加到mongoDB数据库，从而出现错误：路径名称是必需的

2 个答案: