blocks|key|1326089|text|Breadcrumbs菜单在大多数Rails应用程序中是一种重复出现的模式。为了解决这个问题，我创建并发布了一个名为breadcrumbs_on_rails的插件。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1326090|您可以在控制器中定义面包屑|1326091|class+MyController

++add_breadcrumb+"home",+root_path
++add_breadcrumb+"my",+my_path

++def+index
++++#+...

++++add_breadcrumb+"index",+index_path
++end

end|code-block|syntax|javascript|1326092|然后在视图中渲染它们。|1326093|<!DOCTYPE+html+PUBLIC+"-//W3C//DTD+XHTML+1.0+Transitional//EN"
++"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html+xmlns="http://www.w3.org/1999/xhtml"+xml:lang="en"+lang="en">
<head>
++<meta+http-equiv="Content-Type"+content="text/html;+charset=utf-8"/>
++<title>untitled</title>
</head>

<body>
++<%25=+render_breadcrumbs+%25>
</body>
</html>|1326094|即使你不想使用插件，我也鼓励你去看看。它是开源的，您可以为您的应用程序获取一些想法。|1326095|entityMap|0|LINK|mutability|MUTABLE|url|http://github.com/weppos/breadcrumbs_on_rails^0|1M|K|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|13|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|15|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|16|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

Breadcrumbs menu are a recurrent pattern in most Rails applications. To solve this issue, I created and released a plugin called <a href="http://github.com/weppos/breadcrumbs_on_rails" rel="noreferrer">breadcrumbs_on_rails</a>.

You define your breadcrumbs in the controller

<pre><code>class MyController

 add_breadcrumb "home", root_path
 add_breadcrumb "my", my_path

 def index
 # ...

 add_breadcrumb "index", index_path
 end

end
</code></pre>

and you render them in your view.

<pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
&lt;html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"&gt;
&lt;head&gt;
 &lt;meta http-equiv="Content-Type" content="text/html; charset=utf-8"/&gt;
 &lt;title&gt;untitled&lt;/title&gt;
&lt;/head&gt;

&lt;body&gt;
 &lt;%= render_breadcrumbs %&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

Even if you don't want to use a plugin, I encourage you to give it a look. It's open source and you can grab some idea for your app.

blocks|key|1110971|text|我制作了一个名为Gretel的gem，这是一个用于创建面包屑的Ruby+on+Rails插件。面包屑在单独的配置文件中配置，并在视图中选择。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1110972|示例config/breadcrumbs.rb|style|CODE|1110973|crumb+:root+do
++link+"Home",+root_path
end

crumb+:projects+do
++link+"Projects",+projects_path
end

crumb+:project+do+%7Cproject%7C
++link+project.name,+project_path(project)
++parent+:projects
end

crumb+:project_issues+do+%7Cproject%7C
++link+"Issues",+project_issues_path(project)
++parent+:project,+project
end

crumb+:issue+do+%7Cissue%7C
++link+issue.name,+issue_path(issue)
++parent+:project_issues,+issue.project
end|code-block|syntax|javascript|1110974|在您的视图中：|1110975|<%25+breadcrumb+:issue,+@issue+%25>|1110976|在你的app/views/layout/application.html.erb中：|1110977|<%25=+breadcrumbs+pretext:+"You+are+here:+"+%25>|1110978|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/lassebunk/gretel^0|8|6|0|0|2|L|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|D|3|E|5|6|7|16|8|@$A|17|B|18|F|G]]|9|@]|C|$]]|$1|H|3|I|5|J|7|19|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|1A|8|@]|9|@]|C|$]]|$1|O|3|P|5|J|7|1B|8|@]|9|@]|C|$K|L]]|$1|Q|3|R|5|6|7|1C|8|@]|9|@]|C|$]]|$1|S|3|T|5|J|7|1D|8|@]|9|@]|C|$K|L]]|$1|U|3|-4|5|6|7|1E|8|@]|9|@]|C|$]]]|V|$W|$5|X|Y|Z|C|$10|11]]]]

I made a gem named <a href="https://github.com/lassebunk/gretel" rel="noreferrer">Gretel</a> that is a Ruby on Rails plugin for creating breadcrumbs. The breadcrumbs are configured in a separate configuration file and selected in the view.

Example <code>config/breadcrumbs.rb</code>:

<pre><code>crumb :root do
 link "Home", root_path
end

crumb :projects do
 link "Projects", projects_path
end

crumb :project do |project|
 link project.name, project_path(project)
 parent :projects
end

crumb :project_issues do |project|
 link "Issues", project_issues_path(project)
 parent :project, project
end

crumb :issue do |issue|
 link issue.name, issue_path(issue)
 parent :project_issues, issue.project
end
</code></pre>

In your view:

<pre><code>&lt;% breadcrumb :issue, @issue %&gt;
</code></pre>

In your app/views/layouts/application.html.erb:

<pre><code>&lt;%= breadcrumbs pretext: "You are here: " %&gt;
</code></pre>

blocks|key|1111020|text|您也可以使用Ariane+http://github.com/simonc/ariane|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1111021|使用它，您可以生成任何类型的breadcrumb，如段落中的链接或ul/li+:)|1111022|如果你想要特定的东西，你可以创建你自己的渲染器。|1111023|它的使用非常简单，只需在before_filter中添加以下代码|style|CODE|1111024|ariane.add+'Home',+root_path+#+in+the+app+controller+to+have+it+everywhere
ariane.add+'Some+Page',+some_path|code-block|syntax|javascript|1111025|entityMap|0|LINK|mutability|MUTABLE|url|http://github.com/simonc/ariane^0|D|V|0|0|0|0|C|D|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|13|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|14|8|@$A|15|B|16|J|K]]|9|@]|C|$]]|$1|L|3|M|5|N|7|17|8|@]|9|@]|C|$O|P]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

You could also use Ariane <a href="http://github.com/simonc/ariane" rel="nofollow">http://github.com/simonc/ariane</a>

With it you can generate any kind of breadcrumb, as links in a paragraph or as a ul/li :)

If you want something specific, you can create your own renderer.

It's pretty simple to use, just add this in a <code>before_filter</code>:

<pre><code>ariane.add 'Home', root_path # in the app controller to have it everywhere
ariane.add 'Some Page', some_path
</code></pre>

blocks|key|1111056|text|不要只将任何插件用于面包屑。此链接提供了一种生成面包屑的有效方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1111057|http://szeryf.wordpress.com/2008/06/13/easy-and-flexible-breadcrumbs-for-rails/|offset|length|1111058|虽然，这是一个非常古老的帖子，但它仍然有效。|1111059|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|27|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@$D|Q|E|R|1|S]]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|C]]]]

Do not use any plugins just for breadcrumbs. This link provides an efficient method to generate breadcrumbs.

<a href="http://szeryf.wordpress.com/2008/06/13/easy-and-flexible-breadcrumbs-for-rails/" rel="nofollow">http://szeryf.wordpress.com/2008/06/13/easy-and-flexible-breadcrumbs-for-rails/</a>

Although, it is a very old post, it still works.

blocks|key|1326309|text|我做了一个crumble+gem的叉子。它只有很少的配置选项，而且看起来被废弃了，但是当我尝试切换到breadcrumbs_on_rails或gretel时，我意识到我必须向我的视图或控制器添加很多行(而且我有很多行)，但是使用crumble，所有这些都存储在一个配置文件中。如果你喜欢做一些补丁，并且更喜欢在一个地方配置，我认为这是有史以来最好的解决方案。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1326310|entityMap^0|5|7|1E|K|1Z|6|36|7|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|G|$]]

I did a fork of <code>crumble</code> gem. It has very few configuration options and it appears abandoned, but when I tried to switch to <code>breadcrumbs_on_rails</code> or <code>gretel</code>, I realized that I have to add many lines to my views or controllers (and I have a lot of them), but with <code>crumble</code> it is all stored in one configuration file. If you like to do some patches and prefer configuration in one place, I think it is the best solution ever.

I'm slightly insecure about my breadcrumb solution. Names and links are defined in each controller action:

<pre><code>&lt;a href="http://localhost:3000/"&gt;Home&lt;/a&gt;
&lt;% if defined? @l1_link %&gt;
 &gt; &lt;a href="&lt;%= @l1_link%&gt;"&gt;&lt;%= @l1_name %&gt;&lt;/a&gt;
 &lt;% if defined? @l2_link %&gt;
 &gt; &lt;a href="&lt;%= @l2_link%&gt;"&gt;&lt;%= @l2_name %&gt;&lt;/a&gt;
 &lt;% end %&gt;
&lt;% end %&gt;
</code></pre>

This way I can use:

<pre><code>@l1_link = user_path()
</code></pre>

Question: As I am not that smart - could this kind of system lead to desaster somewhere down the road? Is this (grossly) inefficient?

Breadcrumbs in Ruby on Rails

我对我的面包屑解决方案有点不放心。名称和链接在每个控制器操作中定义：<a href="http://localhost:3000/">Home</a><% if defined? @l1_link %> > <a href="<%= @l1_link%>"><%= @l1_name %></a> <% if def...

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