{#
    Display a pagination for entries instead of pages
    to display on entry detail pages.

    This will behave like this:

    Post 3
    Post 4
    Post 5
    Post 6 * current
    Post 7
    Post 8
    Post 9
  #}
  {% set paginationOrder = 'postDate desc' %}

  {# Set offset for previous entries to display the max. amount of entries #}
  {% set prevOffset = 4 %}

  {# Get all IDs #}
  {% set everyId = craft.entries.section('posts').limit(null).orderBy(paginationOrder).ids() %}

  {# Get current ID #}
  {% set currentIndex = everyId | indexOf(entry.id) %}

  {#
    Set offset to display 10 entries at the time sand
    keep current entry in the middle of list.
    #}
  {% if currentIndex == 0 %}
    {% set nextOffset = 8 %}
  {% elseif currentIndex == 1 %}
    {% set nextOffset = 7 %}
  {% elseif currentIndex == 2 %}
    {% set nextOffset = 6 %}
  {% elseif currentIndex == 3 %}
    {% set nextOffset = 5 %}
  {% else %}
    {% set nextOffset = 4 %}
  {% endif %}

  <ul>

    {# Get all previous entries #}
    {% if currentIndex != -1 %}
      {% set prevIds = everyId  %}

      {% for item in craft.entries.id(prevIds).orderBy(paginationOrder).offset(currentIndex - prevOffset).all() if item.postDate|date('U') > entry.postDate|date('U') %}
          <li>
            <a href="{{item.url}}">{{item.title}}</a>
          </li>
        {% endfor %}
    {% endif %}

    {# Current entry #}
    <li>
      <strong>{{entry.title}}</strong>
    </li>

    {# Get all next entries #}
    {% if currentIndex != -1 %}

      {# Get next ID's and offset #}
      {% set nextIds = everyId | slice(currentIndex+1, nextOffset) %}
      {% set nextEntries = craft.entries.id(nextIds).fixedOrder(true) %}

      {% for nextEntry in nextEntries.all() %}
        <li>
          <a href="{{nextEntry.url}}">{{ nextEntry.title }}</a>
        </li>
      {% endfor %}
    {% endif %}
  </ul>