{# Flash messages as Bootstrap alerts. #} {% set queues = ['error', 'warning', 'info', 'success', ''] %} {# Bootstrap 3.x alert classes mapped to error levels #} {% set visuals = {'error': 'danger'} %} {% for queue in queues %} {% with messages = request.session.pop_flash(queue) %} {% for msg in messages %} {% if msg.kind %}