{{form_row (form.eleve, {'attr' : {'class': 'form-control'}} ) }}
{{form_row (form.instrument, {'attr' : {'class': 'form-control'}} ) }}
{{form_row (form.dateDebut, {'attr' : {'class': 'form-control'}} ) }}
{{form_row (form.dateFin, {'attr' : {'class': 'form-control'}} ) }}