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 registerHelper, Utils, 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. swift中标签的使用

    1,标签的创建 1 2 3 4 5 6 7 8 9 10 import UIKit class ViewController: UIViewController {     override func ...

  2. Google Analytics之增强型电子商务报告

    虽然Google Analytics很多年以前就提供了电子商务报告的功能,但对于电子商务网站来说,这个报告缺失的东西还太多.而Google Analytics即将推出的增强型电子商务报告有望弥补这一短 ...

  3. 把记事本文件固定在Win8的开始屏幕

    1.创建该文件的桌面快捷方式: 2.将快捷方式拷贝至开始菜单目录,在开始屏幕的查看全部中可以看见该文件快捷: 3.在查看全部中右键点击该快捷,选择固定在开始屏幕:

  4. Spring JdbcTemplate用法整理

    Spring JdbcTemplate用法整理: xml: <?xml version="1.0" encoding="UTF-8"?> <b ...

  5. V8编程入门

    本文档介绍了V8引擎的一些关键概念,并提供了例子hello world指引你入门. Hello World 让我们看一个Hello World的示例,它将一个字符串参数作为JavaScript语句,执 ...

  6. bootstrap 表单控件 控件状态 控件大小 help-block

    bootstrap 表单控件 控件状态 控件大小 help-block <!DOCTYPE html> <html lang="en"> <head& ...

  7. MyBatis浅尝笔记

    MyBatis应属于一种轻量级的java持久层技术,它通过简单的SQL xml或注解,将数据库数据映射到接口与POJO.最近项目要用到mybatis,所以学习之后在这里做个总结,文中的示例以xml配置 ...

  8. HDU3410（单调队列）

    Passing the Message Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Othe ...

  9. iOS横向瀑布流的封装

    前段时间, 做一个羡慕, 需要使用到瀑布流! 说道瀑布流, 或许大家都不陌生, 瀑布流的实现也有很多种! 从scrollView 到 tableView 书写的瀑布流, 然后再到2012年iOS6 苹 ...

  10. iOS网络层设计感想

    App的开发无外乎从网络端获取数据显示在屏幕上,数据做些缓存或者持久化,所以网络层极为重要.原来只是把AFNetwork二次封装了一下,使得调用变得很简单,并没有深层次的考虑一些问题. 前言 参考: ...