如何在 Rails 3 中创建动态生成的面包屑? [英] How do I create a dynamically generated breadcrumb in Rails 3?
本文介绍了如何在 Rails 3 中创建动态生成的面包屑?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
面包屑是一种导航元素，用于告诉用户他们在网站上的位置.
例如
主页 >> 项目 >> 阶段 >> 上传.
家、项目、舞台和地方上传是单独的控制器.
解决方案
我使用几乎相同的代码将近 10 年......首先用 ASP 编写，然后是 C#、PHP，现在是 Rails:
模块 NavigationHelperdef ensure_navigation@navigation ||= [ { :title =>'主页', :url =>'/' } ]结尾def navigation_add(标题，网址)确保导航<<{:标题=>标题, :url =>网址 }结尾def render_navigation渲染:部分=>'共享/导航', :locals =>{:导航=>确保导航 }结尾结尾然后，在shared/navigation.html.erb:
<% nav.each do |n|％＞<%= link_to n[:title], n[:url] %><%结束%><%= link_to yield(:title), request.path, :class =>'无链接' %>您的常规视图:
<% content_for :title, '我的页面标题' %><% navigation_add '我的父页面标题', parent_page_path %>还有你的模板:
<头><标题><%=产率:标题%><身体>...<%=render_navigation %>...<%=产率%></html>Breadcrumb being the navigational element that is used to tell the user where they are on the site.
E.g.
Home >> Projects >> Stages >> Uploads.
Where home, projects, stages & uploads are separate controllers.
解决方案
I use almost the same code for like 10 years... Wrote it first in ASP, then C#, PHP, and now Rails:
module NavigationHelper
def ensure_navigation
@navigation ||= [ { :title => 'Home', :url => '/' } ]
end
def navigation_add(title, url)
ensure_navigation << { :title => title, :url => url }
end
def render_navigation
render :partial => 'shared/navigation', :locals => { :nav => ensure_navigation }
end
end
Then, in shared/navigation.html.erb:
<div class="history-nav">
<% nav.each do |n| %>
<%= link_to n[:title], n[:url] %>
<% end %>
<%= link_to yield(:title), request.path, :class => 'no-link' %>
</div>
Your regular view:
<% content_for :title, 'My Page Title' %>
<% navigation_add 'My Parent Page Title', parent_page_path %>
And your template:
<html>
<head>
<title> <%= yield :title %> </title>
</head>
<body>
...
<%= render_navigation %>
...
<%= yield %>
</body>
</html>
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