mongoose之模块化使用

目录结构

1. module
   1. db.js
   2. user.ja
2. app.js

db.js

const mongoose = require('mongoose')

mongoose.connect('mongodb://localhost/eg', { 
  useNewUrlParser: true, 
  useUnifiedTopology: true 
  },err => {
  if (!err)
    console.log('连接数据库成功...');
})
module.exports = mongoose

users.js

const mongoose = require('./db.js')

const userSchema = new mongoose.Schema({
  userName: {
    type: String,
    // 预置验证器
    maxLength: [6, '名字太长，3-6个汉字'],
    minLength: 2,
    required: true
  },
  password: {
    type: String,
    minLength: [6, '密码不能小于六位'],
    required: true
  },
  job: {
    type: String,
    required: false
  },
  briefIntroduction: {
    type: String,
    maxLength: [100, '个人简介字数应在100字内'],
    required: false
  }
})
const User = mongoose.model('User', userSchema)
module.exports = User

app.js

const userModel = require('./module/users.js')