{% with messages = get_flashed_messages(with_categories=True) %} {% if messages %} {% for category, message in messages %} {% if category == 'error' %} {% set icon = 'glyphicon glyphicon-exclamation-sign' %} {% elif category == 'success' %} {% set icon = 'glyphicon glyphicon-ok-sign' %} {% else %} {% set icon = 'glyphicon glyphicon-info-sign' %} {% endif %}