home-assistant.io/source/_includes/related.html

{% assign related_topics = "" | split: ',' %}
{% assign related_links = "" | split: ',' %}
{%- for entry in page.related -%}
{%- if entry.url -%}
{% assign related_links = related_links | push: entry %}
{% else %}
{% assign related_topics = related_topics | push: entry %}
{% endif %}
{%- endfor -%}
{% if related_topics and related_topics.size != 0 %}
<div class="text related-topics">
  <h2>Related topics<a class="title-link" href="#related-topics" name="related-topics"></a></h2>
  <ul>
    {%- for related in related_topics -%}
    {% assign computed = related.docs | split: "#" %}
    {% assign target_url = computed[0] %}
    {% assign target_page = site.data["site_pages"][target_url] %}
    {% unless target_page == null %}
    {% assign link_target = computed[1] %}
    {% assign suggested_title = related.title | default: link_target | split: "-" | join: " " | capitalize %}
    <li>
      <a href="{{ target_page['url'] | relative_url }}{% if link_target %}#{{link_target}}{% endif %}" class="topic">
        {{ suggested_title | default: target_page["title"]}}
      </a>
    </li>
    {% endunless %}
    {%- endfor -%}
  </ul>
</div>
{% endif %}
{% if related_links and related_links.size != 0 %}
<div class="text related-links">
  <h2>Related links<a class="title-link" href="#related-links" name="related-links"></a></h2>
  <ul>
    {% for link in related_links %}
    <li><a href="{{ link.url }}" class="link" target="_blank">{{ link.title | default: link.url }}</a></li>
    {% endfor %}
  </ul>
</div>
{% endif %}