netbox-community-netbox/netbox/templates/django/forms/widgets/attrs.html

{# Skip "class" attribute, which needs to be handled on the widget directly. #}
{% for name, value in widget.attrs.items %}{% if name != 'class' %}{% if value is not False %} {{ name }}{% if value is not True %}="{{ value|stringformat:'s' }}"{% endif %}{% endif %}{% endif %}{% endfor %}