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. JS base64 加密和解密

    /*** * 加密 base64encode(utf16to8(str)) * 解密 utf8to16(base64decode(str)) * * */ var base64EncodeChars ...

  2. Maven与Antx（整理）

    http://blog.csdn.net/ghost_t/article/details/5709640 一.Maven与Antx概况: Antx简介   在讲为什么使用maven之前我想说一下,an ...

  3. Linux笔记（五） - 用户管理命令

    (1)添加用户:useradd [选项] 用户 -u UID:手工指定用户的UID号-d 家目录:手工指定用户的家目录-c 用户说明:手工指定用户说明,有空格需加双引号-g 初始组:手工指定初始组-G ...

  4. iOS 图片压缩方法

    iOS 图片压缩方法 两种图片压缩方法 两种压缩图片的方法:压缩图片质量(Quality),压缩图片尺寸(Size). 压缩图片质量 NSData *data = UIImageJPEGReprese ...

  5. （五）Hololens Unity 开发之 手势识别

    学习源于官方文档 Gestures in Unity 笔记一部分是直接翻译官方文档,部分各人理解不一致的和一些比较浅显的保留英文原文 (五)Hololens Unity 开发之 手势识别 HoloLe ...

  6. 《JAVASCRIPT高级程序设计》window/location/navigator/screen/history对象

    如果要在web中使用JAVASCRIPT,那么BOM(浏览器对象模型)毫无疑问是最重要的部分.BOM提供了很多对象,例如,window.location.navigator.screen.histor ...

  7. Array数组常用的5个方法

    es6 时代来临了,不知道es5 你熟知了吗? 在此介绍一个我常用到的5个方法,万恶的ie9一下并不支持,需要做兼容慎用 indexOf indexOf()方法返回在该数组中第一个找到的元素位置,如果 ...

  8. js详解之作用域-实例

    函数如下大家可以做做看 function aa(a,b,c){ function a(){} console.log(a); console.log(aa); console.log(argument ...

  9. MVC分页控件

    1.下载MvcPager.dll文件并引用到MVC项目中 2.在控制器中引用命名空间using Webdiyer.WebControls.Mvc; 3.获取数据集合,数据的总记录数(数据集合有多少条数 ...

  10. WP8.1开发中对于XAML中一些语言的学习(1)；

    以前在学习WP开发的时候,看到视频中说到程序在创建之初,MainPaige.xaml页面上有一些代码: <Page x:Class="草案.MainPage" xmlns=& ...