{# type can be: notice, error #}
    {% for type, flashMessages in app.session.flashbag.all() %}
        {% for flashMessage in flashMessages %}
        <div class="alert alert-{{ type == 'notice' ? 'success' : (type == 'error' ? 'danger' : type) }}">
            {{ flashMessage|trans({},'messages') }}
        </div>
        {% endfor %}
    {% endfor %}