{% block phone_number_widget -%}
    {% if widget is constant('Misd\\PhoneNumberBundle\\Form\\Type\\PhoneNumberType::WIDGET_COUNTRY_CHOICE') %}
        {% set attr = attr|merge({class: (attr.class|default('') ~ ' input-group')|trim}) %}
        <div {{ block('widget_container_attributes') }}>
            {{- form_widget(form.country) -}}
            {{- form_widget(form.number) -}}
        </div>
    {% else -%}
        {{- block('form_widget_simple') -}}
    {%- endif %}
{%- endblock phone_number_widget %}