# File lib/action_controller/polymorphic_routes.rb, line 74
    def polymorphic_url(record_or_hash_or_array, options = {})
      if record_or_hash_or_array.kind_of?(Array)
        record_or_hash_or_array = record_or_hash_or_array.dup
      end

      record    = extract_record(record_or_hash_or_array)
      format    = extract_format(record_or_hash_or_array, options)
      namespace = extract_namespace(record_or_hash_or_array)
      
      args = case record_or_hash_or_array
        when Hash;  [ record_or_hash_or_array ]
        when Array; record_or_hash_or_array.dup
        else        [ record_or_hash_or_array ]
      end

      inflection =
        case
        when options[:action].to_s == "new"
          args.pop
          :singular
        when record.respond_to?(:new_record?) && record.new_record?
          args.pop
          :plural
        else
          :singular
        end

      args.delete_if {|arg| arg.is_a?(Symbol) || arg.is_a?(String)}
      args << format if format
      
      named_route = build_named_route_call(record_or_hash_or_array, namespace, inflection, options)
      send!(named_route, *args)
    end