{% set doRender = false %}

{% set render %}
    <ul class="nav nav-pills mt-3 mb-3 p-0">
        {% for locale in configuration.locales %}
            <li class="nav-item">
                <a class="nav-link {% if loop.first %}active{% endif %}" data-toggle="tab" href="#form-locale-{{ loop.index }}">
                    <span class="flag-icon flag-icon-{{ locale }}"></span>

                    {{ locale|upper|trans }}
                </a>
            </li>
        {% endfor %}
    </ul>

    <div class="tab-content">
        {% for locale in configuration.locales %}
            <div class="tab-pane {% if loop.first %}show active{% endif %}" id="form-locale-{{ loop.index }}">
                {% for item in form.children[locale] %}
                    {% if not item.isRendered %}
                        {% set doRender = true %}
                    {% endif %}

                    {% include(configuration.view('form_widget', '@Core/admin/crud/_form_widget.html.twig')) with {form: item} %}
                {% endfor %}
            </div>
        {% endfor %}
    </div>
{% endset %}

{% if doRender %}
    {{ render|raw }}
{% endif %}