# File lib/dragonfly/data_storage/s3data_store.rb, line 79
      def url_for(uid, opts={})
        if opts && opts[:expires]
          if storage.respond_to?(:get_object_https_url) # fog's get_object_url is deprecated (aug 2011)
            storage.get_object_https_url(bucket_name, uid, opts[:expires])
          else
            storage.get_object_url(bucket_name, uid, opts[:expires])
          end
        else
          scheme = opts[:scheme] || url_scheme
          host   = opts[:host]   || url_host || "#{bucket_name}.s3.amazonaws.com"
          "#{scheme}://#{host}/#{uid}"
        end
      end