sga_nav

Usage

to build a navigation li :

 <div class="nav">
   <ul>
     <% main_nav :user, :class => "first" do %> <%= link_to 'Users', users_path %> <% end %>
     <% main_nav :scene do %> <%= link_to 'Scenes', scenes_path %> <% end %>
   </ul>
 </div>

to build a sub nav:

  <div class="secondary-navigation">
    <ul>
      <% sec_nav :new, :class => "first" do %><%= link_to "tasks", user_tasks_path(current_user) %><% end %>
      <% sec_nav :strategy do %><%= link_to "messages", user_messages_path(current_user) %><% end %>
    </ul>
    <div class="clear"></div>
  </div>

when user view pages correspoding to actions in users controller, we'd like the tab "User" highlight, to accomplish this:

class UsersController < ApplicationController

  main_nav_highlight :users

  # bla bla bla ...

end

also if you need to highlight the sub nav, call "sec_nav_highlight :something" in your controller

Code

module Navigation

module ControllerExtensions

  module ClassMethods

    def sec_nav_highlight(name)
      class_eval do
        before_filter { |c| c.instance_variable_set(:@sec_nav, name) }
      end
    end

    def main_nav_highlight(name)
      class_eval do
        before_filter { |c| c.instance_variable_set(:@main_nav, name) }
      end
    end

  end

end

module RailsHelpers

  def sec_nav(name, options = {}, &block)
    if @sec_nav == name
      if options[:class]
        options[:class] += " active"
      else
        options[:class] = "active"
      end
    end
    content = capture(&block)
    concat content_tag(:li, content, options)
  end

  def main_nav(name, options = {}, &block)
    if @main_nav == name
      if options[:class]
        options[:class] += " active"
      else
        options[:class] = "active"
      end
    end
    content = capture(&block)
    concat content_tag(:li, content, options)
  end

end

end

ActionController::Base.send :extend, Navigation::ControllerExtensions::ClassMethods ActionController::Base.send :helper, Navigation::RailsHelpers

Note on Patches/Pull Requests

Fork the project.
Make your feature addition or bug fix.
Add tests for it. This is important so I don’t break it in a future version unintentionally.
Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
Send me a pull request. Bonus points for topic branches.

sga_nav

Usage

Code

Note on Patches/Pull Requests

Copyright