Rails Flash Messages Helper

rails_flash_messages.rb

  def flash_messages
    content_tag :div, class: "flash-messages" do
      flash.map do |key, value| 
        content_tag :div, class: "alert alert-dismissable alert-#{key}" do 
          content_tag(:span, '×'.html_safe, class: :close, 'data-dismiss' => 'alert') + value
        end
      end.join().html_safe
    end
  end