render

# File actionview/lib/action_view/helpers/tags/file_field.rb, line 7
        def render
          include_hidden = @options.delete(:include_hidden)
          options = @options.stringify_keys
          add_default_name_and_id(options)

          if options["multiple"] && include_hidden
            hidden_field_for_multiple_file(options) + super
          else
            super
          end
        end