web/_includes/update-list.html

{% comment %}
  Get the last 5 posts from lastmod list.
{% endcomment %}

{% assign MAX_SIZE = 5 %}

{% assign all_list = '' | split: '' %}

{% for post in site.posts %}
  {% if post.last_modified_at %}
    {% capture elem %}
      {{- post.last_modified_at | date: "%Y%m%d%H%M%S" -}}::{{- forloop.index0 -}}
    {% endcapture %}
    {% assign all_list = all_list | push: elem %}
  {% endif %}
{% endfor %}

{% assign all_list = all_list | sort | reverse %}

{% assign update_list = '' | split: '' %}

{% for entry in all_list limit: MAX_SIZE %}
  {% assign update_list = update_list | push: entry %}
{% endfor %}

{% if update_list.size > 0 %}
  <div id="access-lastmod" class="post">
    <div class="panel-heading">{{- site.data.locales[include.lang].panel.lastmod -}}</div>
    <ul class="post-content pl-0 pb-1 ml-1 mt-2">
      {% for item in update_list %}
        {% assign index = item | split: '::' | last | plus: 0 %}
        {% assign post = site.posts[index] %}
        {% assign url = post.url | relative_url %}
        <li>
          <a href="{{ url }}">{{ post.title }}</a>
        </li>
      {% endfor %}
    </ul>
  </div>
  <!-- #access-lastmod -->
{% endif %}