{%  if(object.moyenne > 10 ) %}

<a target="_blank" title="{{ 'admin.bulletin_eleve.Imprimer_attestation'|trans }}"
   class="btn btn-sm btn-default" href="{{ admin.generateObjectUrl('genererAttestationPDF', object) }}">
    <i class="fa fa-file-code-o" aria-hidden="true"></i>
</a>
{% endif %}