{% if not widget.attrs.readonly_select %}
    <select name="{{ widget.name }}"{% include "django/forms/widgets/attrs.html" %}>
        {% for group_name, group_choices, group_index in widget.optgroups %}
            {% if group_name %}
                <optgroup label="{{ group_name }}">
            {% endif %}

            {% for option in group_choices %}
                {% include option.template_name with widget=option %}
            {% endfor %}

            {% if group_name %}
                </optgroup>
            {% endif %}
        {% endfor %}
    </select>

{% else %}
  {% for group_name, group_choices, group_index in widget.optgroups %}
      {% for option in group_choices %}
          {% if widget.value.0|add:"0" == option.value %}
              <input type="hidden" name="{{ widget.name }}" {% if widget.value != None %} value="{{ widget.value.0|stringformat:'s' }}" {% endif %}{% include "django/forms/widgets/attrs.html" %}>
              {{ option.label }}
          {% endif %}
      {% endfor %}
  {% endfor %}
{% endif %}