{{ form_start(form, {'action': path('admin.abonnes.new'), 'attr': {'class': 'form-horizontal'}}) }}
<div class="form-group">
    <label class="form-label">{{ form_label(form.nomprenoms) }}</label>
    {{ form_widget(form.nomprenoms) }}
    <a href="javascript:void(0)" class="small">{{ form_help(form.nomprenoms) }}</a>
</div>

<div class="form-group">
    <label class="form-label">{{ form_label(form.email) }}</label>
    {{ form_widget(form.email) }}
    <a href="javascript:void(0)" class="small">{{ form_help(form.email) }}</a>
</div>

<div class="text-right mt-3">
    <button type="submit" class="btn btn-primary">{{ button_label|default('Abonner') }}</button>&nbsp;
    <button type="reset" class="btn btn-default">Annuler</button>
</div>
{{ form_end(form) }}