{% block collection_widget %}
    {% spaceless %}
        {% if prototype is defined %}
            {% set attr = attr|merge({'data-prototype': form_row(prototype)}) %}
            {% set attr = attr|merge({'data-prototype-name': prototype.vars.name}) %}
        {% endif %}
        {% set attr = attr|merge({'data-allow-add': allow_add ? 1 : 0}) %}
        {% set attr = attr|merge({'data-allow-remove': allow_delete ? 1 : 0 }) %}
        {% set attr = attr|merge({'data-name-prefix': full_name}) %}
        {{ block('form_widget') }}
    {% endspaceless %}
{% endblock collection_widget %}