netbox-community-netbox/netbox/templates/ipam/vlan_delete.html

{% extends 'utilities/confirmation_form.html' %}
{% load form_helpers %}

{% block title %}Delete VLAN {{ vlan }}?{% endblock %}

{% block message %}
    <p>
        Are you sure you want to delete this VLAN?
        {% if vlan.prefix_set.count %}
            The following prefixes will also be deleted:
        {% else %}
            (There are no prefixes associated with this VLAN.)
        {% endif %}
    </p>
    {% if vlan.prefix_set.count %}
        <ul>
            {% for p in vlan.prefix_set.all %}
            <li><a href="{% url 'ipam:prefix' pk=p.pk %}">{{ p }}</a></li>
            {% endfor %}
        </ul>
    {% endif %}
{% endblock %}