egg.js + mongoose

实现 mongodb 数据库增删改查

新建 egg 项目

$ mkdir egg-mongoose-demo && cd  egg-mongoose-demo
$ npm init egg --type=simple
$ npm i

安装 egg-mongoose

npm i egg-mongoose --save

egg 配置

// config\plugin.js

module.exports = {
  mongoose: {
    enable: true,
    package: 'egg-mongoose'
  }
};

mongoose 连接配置

// config\config.default.js

config.mongoose = {
  url: 'mongodb://127.0.0.1:27017/test' // test 为 mongodb 数据库
};

定义 mongoose 数据模型

app 文件夹下新建 model 文件夹 新建 user.js 定义 schema

// app\model\user.js

'use strict';

module.exports = app => {
  const mongoose = app.mongoose;
  const Schema = mongoose.Schema;

  const UserSchema = new Schema({
    userName: { type: String },
    password: { type: String },
  });

  return mongoose.model('User', UserSchema, 'user');
}

定义控制器

// app\controller\user.js

'use strict';

const Controller = require('egg').Controller;
class UserController extends Controller {

  async find() {
    this.ctx.body =  await this.ctx.service.user.find();
  }

  async insert() {
    this.ctx.body =  await this.ctx.service.user.insert();
  }

  async delete() {
    this.ctx.body =  await this.ctx.service.user.delete();
  }

  async update() {
    this.ctx.body =  await this.ctx.service.user.update();
  }
}

module.exports = UserController;

定义服务

// app\service\user.js

'use strict';

const Service = require('egg').Service;

class UserService extends Service {
  async find() {
    console.log('UserService find doing')
    return await this.ctx.model.User.find({});
  }

  async insert() {
    console.log('UserService insert doing')
    return await this.ctx.model.User.create({'userName': 'wq_test', 'password': 123});
  }

  async delete() {
    console.log('UserService delete doing')
    return await this.ctx.model.User.remove({'userName': 'wq_test'});
  }

  async update() {
    console.log('UserService update doing')
    return await this.ctx.model.User.update({'userName': 'wq_test'}, {$set:{'userName':'wq'}});
  }
}

module.exports = UserService;

创建路由

// app\router.js

'use strict';

module.exports = app => {
  const { router, controller } = app;
  router.get('/', controller.home.index);
  router.get('/find', controller.user.find);
  router.get('/insert', controller.user.insert);
  router.get('/delete', controller.user.delete);
  router.get('/update', controller.user.update);
};

启动项目

npm run dev

测试增删改查

[插入数据测试](http://127.0.0.1:7001/insert)
[查询数据测试](http://127.0.0.1:7001/find)
[更新数据测试](http://127.0.0.1:7001/update)
[删除数据测试](http://127.0.0.1:7001/delete)

项目Demo Github地址

主要在维护一个 egg + mysql demo，有兴趣可以看看

Egg+Mysql Demo Github地址