helper.rb

  def current_site_stylesheet_files_tag
    if current_site
      css_files = current_site.stylesheet_files
      if css_files.empty?
        nil
      else
        a = []

        css_files.each do |css|
          a << css.file.url
        end

        a << {:cache => "#{current_site.subdomain}_files"}
        logger.debug("This is the a:::: #{a.inspect}")
        stylesheet_link_tag a.flatten
      end
    end
  end