<select name="${field.name}"
        id="${field.oid}"
        tal:attributes="size field.widget.size"
        class="${field.widget.css_class} ${'is-invalid' if field.error else ''}"
        >
 <option tal:repeat="(value, description) field.widget.values"
         tal:attributes="selected value == cstruct and 'selected';"
         value="${value}">${description}</option>
</select>
