uswds-8.x-2.1-rc1/templates/system/menu/menu--sidebar_second.html.twig

{#
/**
 * @file
 * Override of system/menu.html.twig for a sidebar menu.
 */
#}

{% import _self as menus %}

{#
  We call a macro which calls itself to render the full tree.
  @see http://twig.sensiolabs.org/doc/tags/macro.html
#}
{{ menus.menu_links(items, 0) }}

{% macro menu_links(items, menu_level) %}
  {% import _self as menus %}

  {% set classes = [] %}
  
  {% if items %}

    {% if menu_level == 0 %}
      <ul class="usa-sidenav">
    {% else %}
      <ul class="usa-sidenav__sublist">
    {% endif %}

    {% for item in items %}

      {% if item.in_active_trail %}
        {% set classes = classes|merge(['usa-current']) %}
      {% else %}
        {% set classes = [] %}
      {% endif %}

      <li class="usa-sidenav__item">
        {{ link(item.title, item.url, create_attribute({'class': classes})) }}

        {% if item.in_active_trail and item.below %}
          {{ menus.menu_links(item.below, menu_level + 1) }}
        {% endif %}

      </li>
    {% endfor %}
    </ul>
  {% endif %}
{% endmacro %}