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Yet another Node.js web framework, based on koa.js 又一个 Node.js MVC 框架,基于Koa2

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MySrv

Mysrv shorthand for "My Server", it's a MVC Framework for Node.js. Mysrv aims to make it more easily to build enterprise-grade Node.js web.

This is alpha software; use at your own risk

【中文介绍】

Feature

  • Modular programming

    Cutting up pages into pieces of modules, each module has a corresponding action, not just inculde template

  • Routing

    supprot Express-style routing

  • Render

    Using mozilla's Nunjucks as the default template engine

  • Flexible

    support custom koa middleware & plugins

Installation

npm install mysrv

Project structure

--assets/
	-css/
	-js/
	-favicon.ico
--components/
	-contollers/
	-middlewares/
	-models/
	-plugins/
	-services/
--tasks/
--config/
--views/
--app.js

Overview

Controller

class IndexController {

    /**
     * default welcome page
     * Index as the default action
     */
    index() {

        this.render({title: 'Hello'}); //渲染模版,第一个参数传递的数据,可以在模版直接使用
    }

    /**
     * convenient action annotation
     * 方便的action注解指令
     * 下面action映射的URL为 '/user/login',并且只允许POST请求
     */
    async login($method = 'POST', $url='/user/login') {
    	
    	// using async/await
    	const resultModel = await this.userService(this.params.userName, this.params.pass);
       	
       	if(resultModel.success) {
          ...
       	}else{
          ...
       	}
       	
       	this.render(null, {layout: 'login'}); //使用名称为 "login" 的布局文件
    }
    
    /**
    * Output JSON
    */
    api() {
    
      this.json({
      	data: 'Hello Mysrv'
      });
    }
}

module.exports = IndexController;

Render view

action中调用 this.render() 开始模版渲染流程。如果在模版中调用 {% render "index:child %} 会渲染子模版,并返回渲染后的HTML。注意{% render "index:child %}不仅仅只是将其渲染后的HTML包含进来,它会执行完整的 action !

view.html

<div>
	{% render "index:child %}
</div>

上面完成了view.html模版的渲染后,还不能直接返回给浏览器,他不是完整的HTML。下面还要渲染 Layout 布局模版,{{ view}} 会替换为上面的 view.html渲染后的内容,这样 view.htmllayout.html拼接起来才是一个完整的HTML 页面。

layout.html

<head>
    <title>{{ title }}</title>
    ...
</head>
<body>
    {% render "layout:header" %}

    <div class="container">
    
        {{ $view }}
    
    </div>
    
    {% render "layout:footer" %}
</body>
</html>

布局模版 顾名思义,即定义一个HTML的基本结构。如一个网站的头部、尾部每个页面基本相同,只是中间内容在发生变化,这些公用的部分就应该放在__布局模版__中,以减少重复代码,主模版就只是中间变化的这部分内容。

布局模版默认是开启的,如果你的主模版(如上面的view.html)已经包含完整的HTML,不想拼接布局模版,通过设置this.render 第二个参数 layout = null 来关闭布局模式。即 this.render(data, {layout: null})

Examples

To view the examples, clone the Mysrv and install the dependencies

$ git clone https://github.com/k1995/mysrv.git
$ cd mysrv
$ npm install

Then run whichever example you want

$ cd examples
$ node hello

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Yet another Node.js web framework, based on koa.js 又一个 Node.js MVC 框架,基于Koa2

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