## by Ryan Heath: http://rpheath.com
##
## This is a nice and easy way to dynamically build a tabbed menu for certain
## actions within a controller. By using conventions, you can guarantee that 
## the named routes will be unique based on the controller/action pair
## 
## The controller name will be appended onto the links passed into the helper,
## which will also generate the named route for that action as well
##
## The convention:
##   routes:  (name of the action)_(controller_name)
##
## Example will use three actions in public_controller.rb

# views/public/[whatever].rhtml
# <%= navigation ['login','register','about'] -%>

# helpers/application_helper.rb
def navigation(links)
  returning html = "<ul>" do
    links.each do |link|
      html << "<li class='#{css_for(link)}'>#{build_link_for(link)}</li>"
    end
    html << "</ul>"
  end
end

# helpers/application_helper.rb
def css_for(link)
  controller.action_name.downcase == link.downcase ? 'current' : 'plain'
end

# helpers/application_helper.rb
def build_link_for(link)
  link_to link.capitalize, send("#{link.downcase}_#{controller.controller_name.downcase}_path")
end

# config/routes.rb
map.with_options :controller => 'public' do |path|
  path.login_public '/login',       :action => 'login'
  path.register_public '/register', :action => 'register'
  path.about_public '/about',       :action => 'about'
end