{% if persistent_messages %}
  <form class="hidden"
        hx-post="{% url 'mark_user_messages_shown' %}"
        hx-trigger="load"
        hx-swap="none">
    {% csrf_token %}
    {% for message in persistent_messages %}<input type="hidden" name="message_ids" value="{{ message.id }}">{% endfor %}
  </form>
{% endif %}