_select.haml

%form.form-inline.pull-right
    %select.form-control#languageselect{:onchange => "window.location.href = this.options[this.selectedIndex].value"}
        %optgroup{:label => "Select your language"}
            %option{:value => "af", :selected => code_matches("af")} Afrikaans
            %option{:value => "ar", :selected => code_matches("ar")} العربية
            %option{:value => "ca", :selected => code_matches("ca")} Català
            %option{:value => "da", :selected => code_matches("da")} Dansk
            %option{:value => "de", :selected => code_matches("de")} Deutsch
            %option{:value => "en", :selected => code_matches("en")} English
            %option{:value => "es", :selected => code_matches("es")} Español
            %option{:value => "fr", :selected => code_matches("fr")} Français
            %option{:value => "it", :selected => code_matches("it")} Italiano
            %option{:value => "ko", :selected => code_matches("ko")} 한국어
            %option{:value => "ms", :selected => code_matches("ms")} Bahasa melayu
            %option{:value => "nl", :selected => code_matches("nl")} Nederlands
            %option{:value => "pl", :selected => code_matches("pl")} Polski
            %option{:value => "ro", :selected => code_matches("ro")} Română
            %option{:value => "sv", :selected => code_matches("sv")} Svenska
            %option{:value => "th", :selected => code_matches("th")} ไทย