为什么我收到此类型错误而不是 javascript 的构造函数？

Question

我正在尝试创建一个新的 product.to 测试结果是否发送到我的 mongodb ，我在 postman.However 中输入了值，我对这个错误感到困惑。

This is my Product file

const mongoose = require("mongoose");


const ProductSchema = new mongoose.Schema(
    {
    title: {type:String , required:true , unique:true},
    description: {type:String , required:true},
    img: {type:String , required:true },
    categories: {type: Array , required:true },
    size: {type:Array},
    color: {type:Array},
    price: {type: Number , required:true },
    inStock:{type:Boolean , default:true},

},
{ timestamps: true }
);

module.export = mongoose.model("Product" , ProductSchema);

This is my post code

const router = require("express").Router();
const Product = require("../model/Product")
 //Create new product(testing in postman)
router.post("/", async (req,res)=>{
const newProduct = new Product(req.body);

try{
    const savedProduct = await newProduct.save();
    res.status(200).json(savedProduct);
}catch(error){
    res.status(500).json(error)
}
})

After I send the values in postman, I always encounter this error.

TypeError: Product is not a constructor

Answer 1

您正在使用

module.export = mongoose.model("Product" , ProductSchema);

应该是

module.exports = mongoose.model("Product" , ProductSchema);

为什么我收到此类型错误而不是 javascript 的构造函数？

why I got this type error not a constructor for javascipt?

javascript

constructor

mongodb

postman