core/templates/menus/main/menu.html
{% load menu_tags %}
{% for item in menu_items %}
<li class="{{ item.active_class }} nav-item">
<a href="{{ item.href }}" class="nav-link">{{ item.text }}</a>
</li>
{% endfor %}
{% if not request.user.is_subscriber %}
<li class="nav-item">
<a href="/subscribe" class="nav-link">Subscribe</a>
</li>
{% else %}
<li class="nav-item">
<a href="/manage-subscription" class="nav-link">Manage subscription</a>
</li>
{% endif %}