CaracoleBundle/Resources/views/admin/order/field/complementary.html.twig

{% set value = entity.instance.complementaryOrderShops|length %}
{% if value > 0  %}
    <span class="badge badge-success">
        {{ value|length }} compléments
    </span>
{% else %}
    <span class="badge badge-danger">
        non
    </span>
{% endif %}