barking-code.github.io/_includes/sub-menu-links.html at main · barking-code/barking-code.github.io · GitHub

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{% assign sub_menu_nodes = site.pages | where: "is_sub_menu", true | sort:"sidebar_sort_order" %}

{% for sub_node in sub_menu_nodes %}
  {% if sub_node.main_category == category %}
    {% assign is_active = false %}
    {% if sub_node.url == page.url %}
      {% assign is_active = true %}
    {% else %}
      {% for category in page.categories %}
        {% if sub_node.category == category %}
          {% assign is_active = true %}
        {% endif %}
      {% endfor %}
    {% endif %}

    <a class="category-link {% if is_active %} active{% endif %}"
        href="{{ sub_node.url | relative_url }}">└ {{ sub_node.title }}</a>
  {% endif %}
{% endfor %}