demarches-normaliennes/app/views/users/description/champs/_engagement.html.haml

%input{ type: 'hidden', name: "champs['#{champ.id}']", id: "champs_#{champ.id}", value: '' }
%input{ type: 'checkbox', style: 'margin-left: 15px;', name: "champs['#{champ.id}']", id: "champs_#{champ.id}", checked: ('checked' if champ.object.value == 'on') }