classy-1.0.1/templates/form/select.html.twig

{#
/**
 * @file
 * Theme override for a select element.
 *
 * Available variables:
 * - attributes: HTML attributes for the <select> tag.
 * - options: The <option> element children.
 *
 * @see template_preprocess_select()
 */
#}
<select{{ attributes }}>
{%- for option in options -%}
  {%- if option.type == 'optgroup' -%}
    <optgroup label="{{ option.label }}">
    {%- for sub_option in option.options -%}
      <option value="{{ sub_option.value }}"{{ sub_option.selected ? ' selected="selected"' }}>{{ sub_option.label }}</option>
    {%- endfor -%}
    </optgroup>
  {%- elseif option.type == 'option' -%}
    <option value="{{ option.value }}"{{ option.selected ? ' selected="selected"' }}>{{ option.label }}</option>
  {%- endif -%}
{%- endfor -%}
</select>