{% set types = {
    'error': 'danger',
    'success': 'success',
    'notice': 'info',
    'warning': 'warning'
} %}

{% if (flash.has()) %}
    {% for type, messages in flash.getMessages() %}
        {% for message in messages %}
            <div class="alert alert-{{ types[type] }} alert-dismissible" role="alert">
                <button type="button" class="close" data-dismiss="alert">&times;</button>

                <strong>{{ type|capitalize }}</strong>
                <p>
                    {{ message }}
                </p>
            </div>
        {% endfor%}
    {% endfor %}
{% endif %}