netbox-community-netbox/netbox/templates/inc/panels/related_objects.html

{% load helpers %}

<div class="card">
  <h5 class="card-header">Related Objects</h5>
  <ul class="list-group list-group-flush">
    {% for qs, filter_param in related_models %}
      {% with viewname=qs.model|viewname:"list" %}
        <a href="{% url viewname %}?{{ filter_param }}={{ object.pk }}" class="list-group-item list-group-item-action d-flex justify-content-between">
          {{ qs.model|meta:"verbose_name_plural"|bettertitle }}
          {% with count=qs.count %}
            {% if count %}
              <span class="badge bg-primary rounded-pill">{{ count }}</span>
            {% else %}
              <span class="badge bg-light rounded-pill">&mdash;</span>
            {% endif %}
          {% endwith %}
        </a>
      {% endwith %}
    {% endfor %}
  </ul>
</div>