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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="Description" content="Ember.js的中文开发者交流平台，提供Ember.js官方网站指南和API的中文翻译，持续关注最近的社区动态，为您提供高质量的Ember.js中文资料。 " />
<meta name="Keywords" content="Ember.js、Ember、Javascript、Javascript框架、HTML、论坛、博客、中文社区" />
<title>Ember.js - 包裹内容</title>
<link rel="shortcut icon" href="/images/favicon.png" />
<!--[if lte IE 7 ]><link href="/stylesheets/fonts/fontello-ie7.css" media="screen" rel="stylesheet" type="text/css" /><![endif]-->
<link href="/stylesheets/site.css" media="screen" rel="stylesheet" type="text/css" />
<link href="/stylesheets/highlight.css" media="screen" rel="stylesheet" type="text/css" />
<link href="/stylesheets/emberjs-cn.css" media="screen" rel="stylesheet" type="text/css" />
<link href="http://emberjs.cn/blog/feed.xml" rel="alternate" type="application/atom+xml" title="Ember.js CN - 博客" />
<script type="text/javascript">
var _gaq = _gaq || [];
var pluginUrl = '//www.google-analytics.com/plugins/ga/inpage_linkid.js';
_gaq.push(['_require', 'inpage_linkid', pluginUrl]);
_gaq.push(['_setAccount', 'UA-38578402-1']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
<!--[if lt IE 9]>
<script type="text/javascript" src="/javascripts/common-old-ie.js"></script>
<![endif]-->
<!--[if gte IE 9]><!-->
<script type="text/javascript" src="/javascripts/common-modern.js"></script>
<!--<![endif]-->
<script type="text/javascript" src="/javascripts/guides.js"></script>
</head>
<body class="bilingual_guides bilingual_guides_components bilingual_guides_components_wrapping-content-in-a-component bilingual_guides_components_wrapping-content-in-a-component_index">
<div id="header">
<div id="wrapper">
<a id="logo" href="/"> </a>
<ul id="nav">
<li><a href="/guides">指南</a></li>
<li><a href="/blog">博客</a></li>
<li>
<a target="_blank" href="http://discuss.emberjs.cn">论坛</a>
</li>
<li><a href="/builds">构建</a></li>
</ul>
<div id="github">
<a href="https://github.com/emberjs-cn"><img src="/images/fork-us.png">Fork Us!</a>
<a href="https://github.com/emberjs/ember.js"><img src="/images/fork-us.png">Fork Ember!</a>
</div>
</div>
</div>
<div id="content-wrapper">
<div id="sidebar">
<ol id="toc-list">
<li class="level-1">
<a href="/bilingual_guides/getting-started">入门指南</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/getting-started">介绍</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/planning-the-application">应用规划</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/creating-a-static-mockup">创建静态页面</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/obtaining-emberjs-and-dependencies">获取Ember.js和相应依赖</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/adding-a-route-and-template">添加第一个路由与模板</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/modeling-data">建立模型</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/using-fixtures">使用静态数据</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/displaying-model-data">显示模型数据</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/displaying-a-models-completeness">显示模型的完成状态</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/creating-a-new-model">创建新的模型实例</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/marking-a-model-as-complete-incomplete">标记模型为完成或未完成</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/displaying-the-number-of-incomplete-todos">显示未完成待办事项的数量</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/toggle-todo-editing-state">切换显示和编辑状态</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/accepting-edits">接受修改</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/deleting-todos">删除模型</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/adding-child-routes">添加子路由</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/show-only-incomplete-todos">显示未完成待办事项</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/show-only-complete-todos">显示已完成待办事项</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/show-all-todos-again">显示所有待办事项</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/display-a-button-to-remove-completed-todos">添加移除所有已完成待办事项的按钮</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/show-when-all-todos-are-complete">提示所有待办事项已完成</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/toggle-all-todos">切换已完成和未完成待办事项</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/getting-started/using-other-adapters">更换FixtureAdapter</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/concepts/core-concepts">概念</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/concepts/core-concepts">核心概念</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/concepts/naming-conventions">命名惯例</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/object-model/classes-and-instances">对象模型</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/object-model/classes-and-instances">类与实例</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/object-model/computed-properties">计算属性</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/object-model/computed-properties-and-aggregate-data">计算属性和带@each的集合数据</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/object-model/observers">观察器</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/object-model/bindings">绑定</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/object-model/reopening-classes-and-instances">重新打开类和实例</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/object-model/what-do-i-use-when">绑定，观察器，计算属性：如何选择？</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/application">应用</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/application">介绍</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/templates/the-application-template">模板</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/templates/the-application-template">应用模板</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/handlebars-basics">Handlebars基础</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/conditionals">条件表达式</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/displaying-a-list-of-items">显示项目列表</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/changing-scope">切换作用域</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/binding-element-attributes">绑定元素属性</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/binding-element-class-names">绑定元素类名称</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/links">链接</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/actions">操作</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/input-helpers">Input Helpers</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/rendering-with-helpers">用助手来渲染</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/templates/writing-helpers">编写助手方法</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/routing">路由</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/routing">介绍</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/defining-your-routes">定义路由</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/generated-objects">生成的对象</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/specifying-a-routes-model">指定路由的模型</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/setting-up-a-controller">设置控制器</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/rendering-a-template">渲染模板</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/redirection">重定向</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/specifying-the-location-api">指定地址API</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/query-params">Query Parameters</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/asynchronous-routing">Asynchronous Routing</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/loading-and-error-substates">Loading / Error Substates</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/routing/preventing-and-retrying-transitions">Preventing and Retrying Transitions</a>
</li>
</ol></li>
<li class="level-1 selected">
<a href="/bilingual_guides/components">组件</a>
<ol class='selected'>
<li class="level-3">
<a href="/bilingual_guides/components">介绍</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/components/defining-a-component">定义组件</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/components/passing-properties-to-a-component">传递属性</a>
</li>
<li class="level-3 sub-selected">
<a href="/bilingual_guides/components/wrapping-content-in-a-component">包裹内容</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/components/customizing-a-components-element">自定义组件元素</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/components/handling-user-interaction-with-actions">使用Action处理用户交互</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/components/sending-actions-from-components-to-your-application">Sending Actions from Components to Your Application</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/controllers">控制器</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/controllers">介绍</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/controllers/representing-a-single-model-with-objectcontroller">代表单一模型</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/controllers/representing-multiple-models-with-arraycontroller">代表多模型</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/controllers/dependencies-between-controllers">管理控制器间的依赖</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/models">模型</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/models">介绍</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/models/defining-models">定义模型</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/models/creating-and-deleting-records">创建和删除记录</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/models/pushing-records-into-the-store">将记录推入仓库</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/models/persisting-records">持久化记录</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/models/finding-records">查询记录</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/models/working-with-records">使用记录</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/models/connecting-to-an-http-server">连接HTTP服务器</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/models/handling-metadata">处理元数据</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/models/frequently-asked-questions">常见问题</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/views">视图</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/views">介绍</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/views/defining-a-view">定义视图</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/views/handling-events">处理事件</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/views/inserting-views-in-templates">在模板中插入视图</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/views/adding-layouts-to-views">为视图添加布局</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/views/customizing-a-views-element">自定义视图元素</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/views/built-in-views">内置视图</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/views/manually-managing-view-hierarchy">手动管理视图层级</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/enumerables">枚举</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/enumerables">介绍</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/testing/integration">测试</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/testing/integration">集成测试</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/configuring-ember/disabling-prototype-extensions">配置Ember.js</a>
<ol>
<li class="level-3">
<a href="/bilingual_guides/configuring-ember/disabling-prototype-extensions">禁用基本类型扩展</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/configuring-ember/embedding-applications">嵌入式应用</a>
</li>
<li class="level-3">
<a href="/bilingual_guides/configuring-ember/feature-flags">特性标识</a>
</li>
</ol></li>
<li class="level-1">
<a href="/bilingual_guides/cookbook">Cookbook</a>
<ol>
<li class="level-3">
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<a href="/bilingual_guides/cookbook/helpers_and_components">助手与组件</a>
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<a href="/bilingual_guides/cookbook/working_with_objects">使用对象</a>
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<a href="/bilingual_guides/understanding-ember/the-view-layer">视图层</a>
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<a href="/bilingual_guides/understanding-ember/keeping-templates-up-to-date">模板自动更新</a>
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<h1>包裹内容
<a href="https://github.com/emberjs-cn/www.emberjs.cn/tree/master/source/guides/components/wrapping-content-in-a-component.md" target="_blank" class="edit-page">
编辑页面</a>
</h1>
<p>英文原文：<a href="http://emberjs.com/guides/components/wrapping-content-in-a-component/">http://emberjs.com/guides/components/wrapping-content-in-a-component/</a></p>
<p>中英对照：<a href="http://emberjs.cn/bilingual_guides/components/wrapping-content-in-a-component/">http://emberjs.cn/bilingual_guides/components/wrapping-content-in-a-component/</a></p>
<p>Sometimes, you may want to define a component that wraps content
provided by other templates.</p>
<p>有时候，可能需要定义一个组件来包裹其他模板提供的内容。</p>
<p>For example, imagine we are building a <code>blog-post</code> component that we can
use in our application to display a blog post:</p>
<p>例如，假设正在创建一个用于显示一篇博客的<code>blog-post</code>组件：</p>
<div class="highlight handlebars "><div class="ribbon"></div><div class="scroller"><table class="CodeRay"><tr>
<td class="line-numbers"><pre>1
2
3
4
</pre></td>
<td class="code"><pre><span class="tag"><script</span> <span class="attribute-name">type</span>=<span class="string"><span class="delimiter">"</span><span class="content">text/x-handlebars</span><span class="delimiter">"</span></span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">"</span><span class="content">components/blog-post</span><span class="delimiter">"</span></span><span class="tag">></span>
<span class="inline"> <h1></span><span class="inline"><span class="inline-delimiter">{{</span><span class="attribute-name">title</span><span class="inline-delimiter">}}</span></span><span class="tag"></h1></span>
<span class="tag"><div</span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">body</span><span class="delimiter">"</span></span><span class="tag">></span><span class="inline"><span class="inline-delimiter">{{</span><span class="attribute-name">body</span><span class="inline-delimiter">}}</span></span><span class="tag"></div></span>
<span class="tag"></script></span>
</pre></td>
</tr></table>
</div></div>
<p>Now, we can use the <code>{{blog-post}}</code> component and pass it properties
in another template:</p>
<p>现在可以使用<code>{{blog-post}}</code>组件并且传递其他模板的属性到该组件：</p>
<div class="highlight handlebars "><div class="ribbon"></div><div class="scroller"><table class="CodeRay"><tr>
<td class="line-numbers"><pre>1
</pre></td>
<td class="code"><pre><span class="inline"><span class="inline-delimiter">{{</span><span class="attribute-name">blog-post</span> <span class="attribute-name">title</span>=<span class="attribute-value">title</span> <span class="attribute-name">body</span>=<span class="attribute-value">body</span><span class="inline-delimiter">}}</span></span>
</pre></td>
</tr></table>
</div></div>
<p><a class="jsbin-embed" href="http://jsbin.com/obogub/1/embed?live">JS Bin</a><script src="http://static.jsbin.com/js/embed.js"></script></p>
<p>(See <a href="/guides/components/passing-properties-to-a-component/">Passing Properties to a Component</a> for more.)</p>
<p>（关于如何传递属性给组件，请参看<a href="/guides/components/passing-properties-to-a-component/">Passing Properties to a Component</a>）</p>
<p>In this case, the content we wanted to display came from the model. But
what if we want the developer using our component to be able to provide custom
HTML content?</p>
<p>在本例中，用于显示的内容来源于模型。那么如果开发者想使用该组件来提供自定义的HTML内容该怎么做呢？</p>
<p>In addition to the simple form you've learned so far, components also
support being used in <strong>block form</strong>. In block form, components can be
passed a Handlebars template that is rendered inside the component's
template wherever the <code>{{yield}}</code> expression appears.</p>
<p>在已经描述的简单形式之外，组件还支持使用<strong>块</strong>的方式。在块方式下，可以传递一个Handlebars模板给组件，该模板将在组件模板中声明<code>{{yield}}</code>表达式的地方显示。</p>
<p>To use the block form, add a <code>#</code> character to the
beginning of the component name, then make sure to add a closing tag.
(See the Handlebars documentation on <a href="http://handlebarsjs.com/#block-expressions">block expressions</a> for more.)</p>
<p>为了使用块方式，需要在使用组件的时候，在组名前加上<code>#</code>，并确定添加了结束标签。（详细内容参见模板文档中的<a href="http://handlebarsjs.com/#block-expressions">块表达式</a>）。</p>
<p>In that case, we can use the <code>{{blog-post}}</code> component in <strong>block form</strong>
and tell Ember where the block content should be rendered using the
<code>{{yield}}</code> helper. To update the example above, we'll first change the component's
template:</p>
<p>在这种情况下，可以使用<code>{{blog-post}}</code>组件的<strong>块方式</strong>，并使用<code>{{yield}}</code>助手告知Ember块内容将被渲染到什么地方。为了更新上面的例子，首先需要修改组件的模板为：</p>
<div class="highlight handlebars "><div class="ribbon"></div><div class="scroller"><table class="CodeRay"><tr>
<td class="line-numbers"><pre>1
2
3
4
</pre></td>
<td class="code"><pre><span class="tag"><script</span> <span class="attribute-name">type</span>=<span class="string"><span class="delimiter">"</span><span class="content">text/x-handlebars</span><span class="delimiter">"</span></span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">"</span><span class="content">components/blog-post</span><span class="delimiter">"</span></span><span class="tag">></span>
<span class="inline"> <h1></span><span class="inline"><span class="inline-delimiter">{{</span><span class="attribute-name">title</span><span class="inline-delimiter">}}</span></span><span class="tag"></h1></span>
<span class="tag"><div</span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">body</span><span class="delimiter">"</span></span><span class="tag">></span><span class="inline"><span class="inline-delimiter">{{</span><span class="attribute-name">yield</span><span class="inline-delimiter">}}</span></span><span class="tag"></div></span>
<span class="tag"></script></span>
</pre></td>
</tr></table>
</div></div>
<p>You can see that we've replaced <code>{{body}}</code> with <code>{{yield}}</code>. This tells
Ember that this content will be provided when the component is used.</p>
<p>由此可见，<code>{{body}}</code>被替换为<code>{{yield}}</code>。这告知Ember这里的内容会在组件使用的时候提供。</p>
<p>Next, we'll update the template using the component to use the block
form:</p>
<p>接下来，更新使用组件的模板采用块方式：</p>
<div class="highlight handlebars "><div class="ribbon"></div><div class="scroller"><table class="CodeRay"><tr>
<td class="line-numbers"><pre>1
2
3
4
</pre></td>
<td class="code"><pre><span class="inline"><span class="inline-delimiter">{{#</span><span class="attribute-name">blog-post</span> <span class="attribute-name">title</span>=<span class="attribute-value">title</span><span class="inline-delimiter">}}</span></span>
<span class="tag"><p</span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">author</span><span class="delimiter">"</span></span><span class="tag">></span>by <span class="inline"><span class="inline-delimiter">{{</span><span class="attribute-name">author</span><span class="inline-delimiter">}}</span></span><span class="tag"></p></span>
<span class="inline"><span class="inline-delimiter">{{</span><span class="attribute-name">body</span><span class="inline-delimiter">}}</span></span>
<span class="inline"><span class="inline-delimiter">{{/</span><span class="attribute-name">blog-post</span><span class="inline-delimiter">}}</span></span>
</pre></td>
</tr></table>
</div></div>
<p><a class="jsbin-embed" href="http://jsbin.com/osulic/1/embed?live">JS Bin</a><script src="http://static.jsbin.com/js/embed.js"></script></p>
<p>It's important to note that the template scope inside the component
block is the same as outside. If a property is available in the template
outside the component, it is also available inside the component block.</p>
<p>这里需要注意的时，在组件块中的作用域与模板的作用域与外部模板的作用域是相同的。如果一个属性在组件外部的模板有效，那么其在组件块内部也有效。</p>
<p>This JSBin illustrates the concept:</p>
<p>下面的JSBin展示了这个概念：</p>
<p><a class="jsbin-embed" href="http://jsbin.com/iqocuf/1/embed?live">JS Bin</a><script src="http://static.jsbin.com/js/embed.js"></script></p>
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