olly/application.html.erb

## application.html.erb
<!DOCTYPE html>
<html>
<head>
  <title>Troop</title>
  <%= stylesheet_link_tag 'application' %>
  <%= javascript_include_tag 'application' %>
  <%= csrf_meta_tags %>
</head>

<body>
  <%= navbar 'Troop', root_path do %>
    <%= navigation do |nav| %>
      <%= nav.item 'Dashboard', dashboard_path, active: DashboardController === controller %>
      <% if current_section %>
        <%= nav.item current_section.naming.people, section_people_path(current_section), active: PeopleController === controller %>
      <% end %>
      <%= nav.item 'Help' %>
    <% end %>

    <%= navigation(:right) do |nav| %>
      <%= nav.item 'Your Account', edit_account_path, active: controller.is_a?(AccountController) || controller.is_a?(AccountPasswordController) %>
      <%= nav.divider %>
      <% if current_section %>
        <%= nav.dropdown_item(current_section.name) do |dropdown| %>
          <%= dropdown.item "#{current_section.naming.short_section} Settings", section_settings_path(current_section) %>
          <% if other_sections.any? %>
            <%= dropdown.divider %>
            <% other_sections.each do |section| %>
              <%= dropdown.item(section.name, section_people_path(section)) %>
            <% end %>
          <% end %>
          <%= dropdown.divider %>
          <%= dropdown.item 'Add a New Section', new_section_path %>
        <% end %>
      <% else %>
        <%= nav.item 'Add a New Section', new_section_path %>
      <% end %>
      <%= nav.divider %>
      <%= nav.item('Logout', destroy_user_session_path) %>
    <% end %>
  <% end %>

  <div class="container">
    <div class="row">
      <div class="span12">
        <%= yield %>
      </div>
    </div>
  </div>
</body>
</html>

## navbar_helper.rb
module NavbarHelper
  def navbar(brand_title, path, &content)
    content_tag(:div, class: 'navbar navbar-static-top navbar-inverse') do
      content_tag(:div, class: 'navbar-inner') do
        content_tag(:div, class: 'container') do
          output = link_to brand_title, path, class: 'brand'
          output.concat(capture(&content)) if block_given?
          output
        end
      end
    end
  end

  def navigation(direction = nil, &navigation)
    raise ArgumentError, "unknown direction :#{direction}" if direction && direction != :right

    classes = ['nav']
    classes << 'pull-right' if direction == :right

    content = capture(Navigation.new(self), &navigation)
    content_tag(:ul, content, class: classes)
  end

  private
  class Navigation < ActionView::Base
    def initialize(helper = nil)
      @helper = helper || self
    end

    attr_reader :helper

    def item(name, path = '', options = {})
      options.assert_valid_keys(:active)

      link = link_to(name, path)

      classes = []
      classes << 'active' if options[:active]
      content_tag(:li, link, class: classes)
    end

    def dropdown_item(name, &dropdown)
      content_tag(:li, class: 'dropdown') do
        name = ERB::Util.html_escape(name)
        link_text = name.concat(%Q{ <b class="caret"></b>}.html_safe)

        link = link_to(name, '#', 'class' => 'dropdown-toggle', 'data-toggle' => 'dropdown')
        content = helper.capture(DropdownItem.new, &dropdown)
        dropdown = content_tag(:ul, content, class: 'dropdown-menu')
        link + dropdown
      end
    end

    def divider
      content_tag(:li, '', class: 'divider-vertical')
    end
  end

  class DropdownItem < ActionView::Base
    def item(name, path = '')
      link = link_to(name, path)
      content_tag(:li, link)
    end

    def divider
      content_tag(:li, '', class: 'divider')
    end
  end
end
	<!DOCTYPE html>
	<html>
	<head>
	<title>Troop</title>
	<%= stylesheet_link_tag 'application' %>
	<%= javascript_include_tag 'application' %>
	<%= csrf_meta_tags %>
	</head>

	<body>
	<%= navbar 'Troop', root_path do %>
	<%= navigation do \|nav\| %>
	<%= nav.item 'Dashboard', dashboard_path, active: DashboardController === controller %>
	<% if current_section %>
	<%= nav.item current_section.naming.people, section_people_path(current_section), active: PeopleController === controller %>
	<% end %>
	<%= nav.item 'Help' %>
	<% end %>

	<%= navigation(:right) do \|nav\| %>
	<%= nav.item 'Your Account', edit_account_path, active: controller.is_a?(AccountController) \|\| controller.is_a?(AccountPasswordController) %>
	<%= nav.divider %>
	<% if current_section %>
	<%= nav.dropdown_item(current_section.name) do \|dropdown\| %>
	<%= dropdown.item "#{current_section.naming.short_section} Settings", section_settings_path(current_section) %>
	<% if other_sections.any? %>
	<%= dropdown.divider %>
	<% other_sections.each do \|section\| %>
	<%= dropdown.item(section.name, section_people_path(section)) %>
	<% end %>
	<% end %>
	<%= dropdown.divider %>
	<%= dropdown.item 'Add a New Section', new_section_path %>
	<% end %>
	<% else %>
	<%= nav.item 'Add a New Section', new_section_path %>
	<% end %>
	<%= nav.divider %>
	<%= nav.item('Logout', destroy_user_session_path) %>
	<% end %>
	<% end %>

	<div class="container">
	<div class="row">
	<div class="span12">
	<%= yield %>
	</div>
	</div>
	</div>
	</body>
	</html>
	module NavbarHelper
	def navbar(brand_title, path, &content)
	content_tag(:div, class: 'navbar navbar-static-top navbar-inverse') do
	content_tag(:div, class: 'navbar-inner') do
	content_tag(:div, class: 'container') do
	output = link_to brand_title, path, class: 'brand'
	output.concat(capture(&content)) if block_given?
	output
	end
	end
	end
	end

	def navigation(direction = nil, &navigation)
	raise ArgumentError, "unknown direction :#{direction}" if direction && direction != :right

	classes = ['nav']
	classes << 'pull-right' if direction == :right

	content = capture(Navigation.new(self), &navigation)
	content_tag(:ul, content, class: classes)
	end

	private
	class Navigation < ActionView::Base
	def initialize(helper = nil)
	@helper = helper \|\| self
	end

	attr_reader :helper

	def item(name, path = '', options = {})
	options.assert_valid_keys(:active)

	link = link_to(name, path)

	classes = []
	classes << 'active' if options[:active]
	content_tag(:li, link, class: classes)
	end

	def dropdown_item(name, &dropdown)
	content_tag(:li, class: 'dropdown') do
	name = ERB::Util.html_escape(name)
	link_text = name.concat(%Q{ <b class="caret"></b>}.html_safe)

	link = link_to(name, '#', 'class' => 'dropdown-toggle', 'data-toggle' => 'dropdown')
	content = helper.capture(DropdownItem.new, &dropdown)
	dropdown = content_tag(:ul, content, class: 'dropdown-menu')
	link + dropdown
	end
	end

	def divider
	content_tag(:li, '', class: 'divider-vertical')
	end
	end

	class DropdownItem < ActionView::Base
	def item(name, path = '')
	link = link_to(name, path)
	content_tag(:li, link)
	end

	def divider
	content_tag(:li, '', class: 'divider')
	end
	end
	end