在Rails 3中突出显示当前页面的最佳方法？(Best way to highlight current page in Rails 3? — apply a css class to links

在Rails 3中突出显示当前页面的最佳方法？(Best way to highlight current page in Rails 3? — apply a css class to links conditionally)

对于以下代码：

<%= link_to "Some Page", some_path %>

如何使用current_page?‎ helper方法应用current的css类？

或者如果还有其他更好的方法可用？

For the following code:

<%= link_to "Some Page", some_path %>

How do I apply a css class current using the current_page?‎ helper method?

Or if some other better way is available?

最满意答案

在app / helpers / application_helper.rb中

def cp(path) "current" if current_page?(path) end

在你的意见：

<%= link_to "All Posts", posts_path, class: cp(posts_path) %>

基本上写一个简单的包装。 此外，您可以扩展该方法，以允许通过添加参数应用其他类。 保持意见简洁/干燥。 或者，没有扩展方法，你可以像简单的String插入一样添加额外的类：

<%= link_to "All Posts", posts_path, class: "#{cp(posts_path)} additional_class" %>

In app/helpers/application_helper.rb

def cp(path) "current" if current_page?(path) end

In your views:

<%= link_to "All Posts", posts_path, class: cp(posts_path) %>

Basically write a simple wrapper around it. Additionally you could extend the method to allow additional classes to be applied by adding arguments. Keeps the views concise/dry. Or, without extending the method, you could just do simple String interpolation like so to add additional classes:

<%= link_to "All Posts", posts_path, class: "#{cp(posts_path)} additional_class" %>