MongoDB 模型未导入 mongodb 数据库

Question

我克隆了一个 github 项目，无法将模型提交到 mongoDb 数据库。我cloned 的项目是一个简单的购物车应用程序。

我按照 readme.md 的说明创建了一个免费的 mongodb 集群。

MongoDB Compass Info Clipboard Image

我正在尝试使用此链接进行连接

mongoose.connect('mongodb+srv://orhanisadmin:this_password_is_invalid@cluster0.pu1be.mongodb.net/orhandb?retryWrites=true&w=majority', {    useNewUrlParser: true });

模型

• product.js

   var mongoose = require('mongoose')
   var Schema = mongoose.Schema
   var ProductSchema = new Schema({
       productName: String,
       productDescription: String,
       productCategory: String,
       productPrice: String,
       productImage: String,
       productSeller: String,
       isBestProduct: Boolean,
       isTopProduct: Boolean,
       productRating: Number
   })  module.exports = mongoose.model('Product', ProductSchema)
  

• shipping.js

   var mongoose = require('mongoose')
   var Schema = mongoose.Schema
  
   var ShippingDetailSchema = new Schema({
       address1: String,
       address2: String,
       country: String,
       zipCode: String,
       shippingDate: String,
       products: Array,
       userId: String,
       totalPrice: String
   })
  
   module.exports = mongoose.model('ShippingDetail', ShippingDetailSchema)
  

• user.js

   var mongoose = require('mongoose')
   var Schema = mongoose.Schema
  
   var UserSchema = new Schema({
       firstName: String,
       lastName: String,
       fullName: String,
       email: String,
       isAdmin: Boolean,
       password: String,
       createdOn: String
   })    module.exports = mongoose.model('User', UserSchema)
  

Answer 1

通常，如果没有命名它的集合，则在保存模型时会自动创建集合。如您所知，在初始状态下，数据库上没有集合。 如果您将一些数据保存到控制器中的数据库，则会自动创建集合。请参考下面的代码。

如何使用猫鼬连接到数据库

const mongoDB = "YOUR_DB_URL";
mongoose.connect(mongoDB, { useNewUrlParser: true , useUnifiedTopology: true});
const db = mongoose.connection;
db.on('error', console.error.bind(console, 'MongoDB connection error:'));
db.on('connected', function(){
  console.log("MongoDB is connected to this app.")
});

如何保存模型...

var payload = req.body.payload;
var user = new UserInfo();
//your action...
user.save();