Generate a dynamic CSS class on a body tag with Haml

gistfile1.rb

  # Generate a dynamic HTML body tag for a passed Haml block. Uses the controller name and
  # action name to generate a class with a dash between to two, e.g. home-index
  #
  # css_class  -  A CSS class name to use on the body tag. (Optional)
  # block      -  The HAML content block with which to surround with a BODY tag.
  #
  # Example
  #
  #   = dynamic_haml_body_tag do
  #     = yield
  #
  # Or
  #
  #   = dynamic_haml_body_tag 'landing-page' do
  #     = yield
  #
  # Surrounds the block with a body tag using a generated or specified CSS class name.
  def dynamic_haml_body_tag(css_class='', &block)
    # If no css class was specified, then generate one from the current controller and action name.
    css_class = css_class=='' ? "#{controller.controller_name}-#{controller.action_name}" : css_class

    # Surround the output of the block with the custom body tag
    capture_haml do
      haml_tag 'body', {:class=>css_class} do
        block.call
      end 
    end 
  end