Best way to highlight current page in Rails 3? — apply a css class to links conditionally

Question

For the following code:

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

How do I apply a css class current using the

Answer 1

I branched off of Michael's answer and tweaked the helper:

def active_class?(*paths)
  active = false
  paths.each { |path| active ||= current_page?(path) }
  active ? 'active' : nil
end

Here's how you'd use it:

<%= link_to "Bookings", bookings_path, class: active_class?(bookings_path) %>

You can pass multiple paths to it in case you have a tab which could be rendered by multiple views:

<%= content_tag :li, class: active_class?(bookings_path, action: 'new') %>

And the great thing about this is if the conditions are false, it will insert nil. Why is this good? Well, if you provide class with nil it won't include the class attribute on the tag at all. Bonus!