{% with messages = get_flashed_messages(with_categories=True) %} {% if messages %} {% for category, message in messages %} {%if category == 'error'%} {%set alert_class = 'bg-danger'%} {%elif category == 'warning'%} {%set alert_class = 'bg-warning'%} {%elif category in ['warning']%} {%set alert_class = 'bg-warning'%} {%else%} {%set alert_class = 'bg-primary'%} {%endif%}