select_content_tag

# File actionview/lib/action_view/helpers/tags/base.rb, line 123
          def select_content_tag(option_tags, options, html_options)
            html_options = html_options.stringify_keys
            add_default_name_and_id(html_options)

            if placeholder_required?(html_options)
              raise ArgumentError, "include_blank cannot be false for a required field." if options[:include_blank] == false
              options[:include_blank] ||= true unless options[:prompt]
            end

            value = options.fetch(:selected) { value() }
            select = content_tag("select", add_options(option_tags, options, value), html_options)

            if html_options["multiple"] && options.fetch(:include_hidden, true)
              tag("input", disabled: html_options["disabled"], name: html_options["name"], type: "hidden", value: "", autocomplete: "off") + select
            else
              select
            end
          end