pelican-elegant/templates/_includes/related_posts.html

{% if article.related_posts %}
{% from '_includes/_defaults.html' import RELATED_POSTS_LABEL with context %}
<section>
    <h2>{{ RELATED_POSTS_LABEL }}</h2>
<ul class="related-posts-list">
{% for related_post in article.related_posts|sort(attribute = 'date') %}
    {% set title = related_post.title|striptags %}
    {% set htitle = title %}
    {%if related_post.subtitle %}
        {% set htitle = title + ' - ' + related_post.subtitle %}
        {% set title = title + ' ' +  '<small>' + related_post.subtitle + '</small>' %}
    {% endif %}
<li><a href="{{ SITEURL }}/{{ related_post.url }}" title="{{ htitle }}">{{ title }}</a></li>
{% endfor %}
</ul>
<hr />
</section>
{% endif %}