select_content_tag

# File actionpack/lib/action_view/helpers/form_options_helper.rb, line 628
        def select_content_tag(option_tags, options, html_options)
          html_options = html_options.stringify_keys
          add_default_name_and_id(html_options)
          select = content_tag("select", add_options(option_tags, options, value(object)), html_options)
          if html_options["multiple"]
            tag("input", :disabled => html_options["disabled"], :name => html_options["name"], :type => "hidden", :value => "") + select 
          else
            select
          end
        end