# File lib/dragonfly/job.rb, line 403
    def attributes_for_url
      attrs = meta.reject{|k, v| !server.params_in_url.include?(k.to_s) }
      attrs[:basename] ||= basename if server.params_in_url.include?('basename')
      attrs[:ext] ||= ext if server.params_in_url.include?('ext')
      attrs[:format] = (attrs[:format] || format_from_meta).to_s if server.params_in_url.include?('format')
      attrs.delete_if{|k, v| v.blank? }
      attrs
    end