koahub-handlebars

koahub-handlebars

koahub handlebars templates

Installation

$ npm install koahub-handlebars

Use with koa

 var koa = require('koa');
 var hbs = require('koahub-handlebars');
 
 var app = koa();
 
 // koahub-handlebars is middleware. `use` it before you want to render a view 
 app.use(hbs.middleware({
   viewPath: __dirname + '/views'
 }));
 
 // Render is attached to the koa context. Call `this.render` in your middleware 
 // to attach rendered html to the koa response body. 
 app.use(function *() {
   yield this.render('index', {title: 'koahub-handlebars'});
 })
 
 app.listen(3000);
 

Registering Helpers

Helpers are registered using the #registerHelper method. Here is an example using the default instance (helper stolen from official Handlebars docs:

hbs = require('koahub-handlebars');
 
hbs.registerHelper('link', function(text, url) {
  text = hbs.Utils.escapeExpression(text);
  url  = hbs.Utils.escapeExpression(url);
 
  var result = '<a href="' + url + '">' + text + '</a>';
 
  return new hbs.SafeString(result);
});

Your helper is then accessible in all views by using, {{link "Google" "http://google.com"}}

The registerHelperUtils, and SafeString methods all proxy to an internal Handlebars instance. If passing an alternative instance of Handlebars to the middleware configurator, make sure to do so before registering helpers via the koahub-handlebars proxy of the above functions, or just register your helpers directly via your Handlebars instance.

You can also access the current Koa context in your helper. If you want to have a helper that outputs the current URL, you could write a helper like the following and call it in any template as {{requestURL}}.

hbs.registerHelper('requestURL', function() {
  var url = hbs.templateOptions.data.koa.request.url;
  return url;
});

Registering Partials

The simple way to register partials is to stick them all in a directory, and pass the partialsPath option when generating the middleware. Say your views are in ./views, and your partials are in ./views/partials. Configuring the middleware via

app.use(hbs.middleware({
  viewPath: __dirname + '/views',
  partialsPath: __dirname + '/views/partials'
}));

will cause them to be automatically registered. Alternatively, you may register partials one at a time by calling hbs.registerPartial which proxies to the cached handlebars #registerPartial method.

Layouts

Passing defaultLayout with the a layout name will cause all templates to be inserted into the {{{body}}} expression of the layout. This might look like the following.

<!DOCTYPE html>
<html>
<head>
  <title>{{title}}</title>
</head>
<body>
  {{{body}}}
</body>
</html>

In addition to, or alternatively, you may specify a layout to render a template into. Simply specify {{!< layoutName }} somewhere in your template. koahub-handlebars will load your layout from layoutsPath if defined, or from viewPath otherwise.

At this time, only a single content block ({{{body}}}) is supported.

Options

The plan for koahub-handlebars is to offer identical functionality as koa-hbs (eventaully). These options are supported now.

  • viewPath: [required] Full path from which to load templates (Array|String)
  • handlebars: Pass your own instance of handlebars
  • templateOptions: Hash of handlebars options to pass to template()
  • extname: Alter the default template extension (default: '.html')
  • partialsPath: Full path to partials directory (Array|String)
  • defaultLayout: Name of the default layout
  • layoutsPath: Full path to layouts directory (String)
  • disableCache: Disable template caching (default: '.true')

Locals

Application local variables ([this.state](https://github.com/koajs/koa/blob/master/docs/api/context.md#ctxstate)) are provided to all templates rendered within the application.

app.use(function *(next) {
  this.state.title = 'My App';
  this.state.email = 'me@myapp.com';
  yield next;
});

The state object is a JavaScript Object. The properties added to it will be exposed as local variables within your views.

<title>{{title}}</title>
 
<p>Contact : {{email}}</p>

Thanks

koa-hbs

Differents

  1. Configuration file incremental changes
  2. Modify some of the features and the default configuration
  3. ...

官网:http://js.koahub.com

基于 Koa平台Node.js开发的KoaHub.js的模板引擎代码的更多相关文章

  1. 基于 Koa平台Node.js开发的KoaHub.js的控制器,模型,帮助方法自动加载

    koahub-loader koahub-loader是基于 Koa平台Node.js开发的KoaHub.js的koahub-loader控制器,模型,帮助方法自动加载 koahub loader I ...

  2. 基于 Koa平台Node.js开发的KoaHub.js连接打印机的代码

    最近好多小伙伴都在做微信商城的项目,那就给大家分享一个基于 Koa.js 平台的 Node.js web 开发的框架连接微信易联云打印机接口的代码,供大家学习.koahub-yilianyun 微信易 ...

  3. 基于 Koa平台Node.js开发的KoaHub.js获取/设置会话功能代码

    koa-session2 Middleware for Koa2 to get/set session use with custom stores such as Redis or mongodb ...

  4. 基于 Koa平台Node.js开发的KoaHub.js的静态服务器重写和索引代码

    koa-static-server Static file serving middleware for koa with directory, rewrite and index support k ...

  5. 基于 Koa平台Node.js开发的KoaHub.js的输出json到页面代码

    koahub-body-res koahub body res Format koa's respond json. Installation $ npm install koahub-body-re ...

  6. 基于 Koa平台Node.js开发的KoaHub.js的跳过组件代码

    koahub-skip koahub skip middleware koahub skip Conditionally skip a middleware when a condition is m ...

  7. 基于webpack的前端工程化开发解决方案探索(二):代码分割与图片加载

    今天我们继续来进行webpack工程化开发的探索! 首先来验证上一篇文章   基于webpack的前端工程化开发解决方案探索(一):动态生成HTML  中的遗留问题:webpack将如何处理按需加载的 ...

  8. node(基础)_node.js中的http服务以及模板引擎的渲染

    一.前言 本节的内容主要涉及: 1.node.js中http服务 2.node.js中fs服务 3.node.js中模板引擎的渲染 4.利用上面几点模拟apache服务器 二.知识 1.node.js ...

  9. 搭建基于MinGW平台的《OpenGL蓝皮书(OpenGL SuperBibe 5th)》示例代码编译环境

    副标题:搭建基于MinGW平台的<OpenGL超级宝典>(OpenGL蓝皮书第5版)GLTools 编译环境.示例代码:Triangle.cpp @ SB5.zip 以下内容以及方法均参考 ...

随机推荐

  1. 常用PHP变量输出:echo, prinf, sprintf, var_dump

    1.使用 echo 语句       使用 echo  可以打印变量和内容,其他可以是系统变量,也可以是HTML代码,也可以是一个PHP表达式,如下示例:                $a = &q ...

  2. spring mvc controller中获取request head内容

    spring mvc controller中获取request head内容: @RequestMapping("/{mlid}/{ptn}/{name}") public Str ...

  3. jQuery的$(window).load与、(document).ready和window.onload的关系

    jQuery的$(window).load与.(document).ready和window.onload的关系 $(function() { console.log('document.ready ...

  4. 玩转微信小程序

    原文链接 2007 年 1 月 9 号,苹果一代在功能机盛行的年代中出世. 2017 年 1 月 9 号,微信小程序在重型app风靡的压力下上线. 苹果的出世掀起了互联网一波又一波的浪潮,而微信小程序 ...

  5. HNOI2002(伸展树)

    营业额统计 Time Limit:5000MS     Memory Limit:165888KB     64bit IO Format:%lld & %llu Submit Status ...

  6. Java连接数据库(mysql,sqlserver)

    犹记当年为了使用java程序连接mysql数据库花费一天时间,最后发现是没有导入外包,如今看来真的发现自己那时有点二,也怪我使用的教科书上没有说明这点(强行甩锅,哈哈).今天分享出来,,希望后者不因为 ...

  7. 百叶窗特效(用move.js库)

    每逢佳节胖三斤啊,胖了胖了,加上每天坐在电脑前,现在还和一个智障聊天,后天去苏州玩的事情,住哪里啊?去哪里嘿嘿嘿啊? 苏州,找了下,攻略,听说一定要去园林看,听说很牛逼,好吧,陶冶一下我的情操.今天操 ...

  8. C++ 头文件系列 (bitset)

    简介 该头文件有关位集,实际上是vector 位 位本质上对应bool的概念,只有0或1,true或false两种对立的值. 但很可惜,字节才是机器上最小的存储单元,所以bool基本上是由一个字节大小 ...

  9. 面试之Java知识整理

    1.面向对象都有哪些特性 继承.封装.多态性.抽象 2.Java中实现多态的机制是什么? 继承与接口 3.Java中异常分为哪些种类 3.1按照异常需要处理的时机分为编译时异常(CheckedExce ...

  10. Android jni 编程4(对基本类型二维整型数组的操作)

    Android jni 编程 对于整型二维数组操作: 类型一:传入二维整型数组,返回一个整型值 类型二:传入二维整型数组,返回一个二维整型数组 声明方法: private native int Sum ...