{{ form_start(form) }}
<div class="row">
    <div class="col-4">
        {{ form_row(form.title) }}
        <div>
            {{ form_label(form.slug) }}
            <div class="input-group mb-3">
              <span class="input-group-text" id="basic-addon1">/galerie-</span>
              {{ form_widget(form.slug) }}
            </div>
        </div>

        {{ form_row(form.isActive) }}
    </div>
    <div class="col-8">
        {{ form_row(form.description) }}
    </div>
</div>
{{ include('admin/ui/form/_submit.html.twig', {submit_class:'success', submit_label:'Sauvegarder'}) }}
{{ form_end(form) }}