filtered_query_string

# File actionpack/lib/action_dispatch/http/filter_parameters.rb, line 73
      def filtered_query_string # :doc:
        parts = query_string.split(/([&;])/)
        filtered_parts = parts.map do |part|
          if part.include?("=")
            key, value = part.split("=", 2)
            parameter_filter.filter(key => value).first.join("=")
          else
            part
          end
        end
        filtered_parts.join("")
      end