<form action="{{ path('admin_gallery_picture') }}" method="post" enctype="multipart/form-data">
    <div class="row">
        <div class="col-lg-6">
            {{ form_label(form.label) }}
        </div>
        <div class="col-lg-14">
            {{ form_widget(form.label) }}
        </div>
    </div>
    <br/>
    <div class="row">
        <div class="col-lg-6">
            {{ form_label(form.file) }}
        </div>
        <div class="col-lg-14">
            {{ form_widget(form.file) }}
        </div>
    </div>
    {{ form_row(form._token) }}
    <br/>
    <div class="row">
        <div class="col-lg-16"></div>
        <div class="col-lg-4">
            <button type="submit" class="btn btn-info">Ajouter</button>
        </div>
    </div>
</form>