{% for type, flash_messages in app.session.flashBag.all %} {% for flash_message in flash_messages %} <div class="alert alert-{{ type }} alert-dismissible" role="alert"> <button type="button" class="close" data-dismiss="alert" aria-label="{{ 'label.close'|trans }}"> <span aria-hidden="true">×</span> </button> {% if type == 'danger' %} <i class="fa fa-exclamation-triangle"></i> {% endif %} {{ flash_message|trans }} </div> {% endfor %}{% endfor %}