# File lib/jquery/fileupload/rails/middleware.rb, line 43
        def metadata
          meta = {}
          meta['data-status'] = @response.status if @response.respond_to? :status
          meta['data-statusText'] = @response.status_message if @response.respond_to? :status_message
          meta['data-type'] = @headers['Content-Type'] if @headers.has_key?('Content-Type')
          meta.map {|key,value| "#{key}='#{value}'" }.join(' ')
        end