Nested application layouts for Rails projects

application.html.haml

!!!
%html
  %head
    %meta{:charset => "utf-8"}
    %meta{:content => "NOODP", :name => "ROBOTS"}
    %meta{name: 'viewport', content: 'width=device-width; initial-scale=1.0; maximum-scale=1.0;'}
    %title= page_title
    = stylesheet_link_tag :application, :media => 'all'
    = csrf_meta_tags
  %body{:class => body_class}

    - if content_for?(:banner)
      = yield :banner

    %section.container
      = render 'flashes'
        = yield

    = render 'shared/footer'

landing.html.haml

= content_for :banner do
  = render 'shared/banner'

= render template: 'application'

pages_controller.rb

class PagesController < ApplicationController
  include HighVoltage::StaticPage

  before_filter :check_for_current_user
  layout :landing_layout

  private

  def landing_layout
    case params[:id]
    when 'home'
      'landing'
    else
      'application'
    end
  end
end