{# @var ea \EasyCorp\Bundle\EasyAdminBundle\Context\AdminContext #}
{# @var field \EasyCorp\Bundle\EasyAdminBundle\Dto\FieldDto #}
{# @var entity \EasyCorp\Bundle\EasyAdminBundle\Dto\EntityDto #}
{# this is a bit ugly, but Twig doesn't have a 'is numeric' test #}
{% if field.formattedValue matches '/^\\d+$/' %}
    <span class="badge badge-secondary">{{ field.formattedValue }}</span>
{% else %}
    {{ field.formattedValue }}
{% endif %}