gistfile1.txt

  # in your helpers...
  def fancy_display(parent)
    "".tap do |content|
      parent.each do |child|
        content << content_tag(:tr, content_tag(:td, child.to_s), :class => "header-#{child.to_s}")

        child.each do |grandchild|
          content << content_tag(:tr, content_tag(:td, grandchild.to_s))
        end
      end

      content = content_tag :table, content
    end
  end


  # in your erb
  <%= raw fancy_display(my_obj) %>