[JavaScript知识库]Hello Egg.js

创建项目

mkdir helloEjj

cd helloEjj

yarn create egg  --type=simple

yarn install

yarn dev

连接mongodb

安装egg-xxx插件后 在 plugin.js注册 挂载到app上
mongoose 的mode约定在model文件下 controller 下的ctx.model.modelName使用

yarn add egg-mongoose

config/plugin.js

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

config/config.default.js在原来的导出中加入 mongoose的配置

//.....
module.exports = appInfo => {
//......
const options = {
  host: "xxx.xxx.xx.xx",
  port: "27017",
  db_name: "xxx",
  user: "xx",
  pass: "xx",
};

const url = `mongodb://${options.user}:${options.pass}@${options.host}:${options.port}/${options.db_name}`;

return {
	xxxxx,
	mongoose: {
    	 url
    }
}

使用时需要按约定来

创建model目录 下面的文件名对应app/controller下的文件名

model/comment.js

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

    const CommentSchema = new Schema({
        content: { type: String },
        type: { type: Number },
    });

    return mongoose.model('Comment', CommentSchema);
}

app/controller/comment.js

'use strict';

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

class CommentController extends Controller {
    async queryComment() {
        const { ctx } = this;
        console.log("Comment:", ctx.model.Comment.find({}))
        ctx.body = 'createComment';
    }
}

module.exports = CommentController;

参考

技术胖–Egg.js快速入门
egg-mongoose
mongoose中文文档