Symfony 2 flash best-practice template for Twitter Bootstrap based Layouts

flashes.html.twig

{% for type, flashes in app.session.flashbag.all %}
    {% for flash in flashes %}
        <div class="row">
            <div class="col-lg-12">
                <div class="alert alert-{{ type }}">
                    <button class="close" data-dismiss="alert" type="button">×</button>{{ flash }}
                </div>
            </div>
        </div>
    {% endfor %}
{% endfor %}

YourController.php

<?

// Usage in Controller Actions:

$this->addFlash('success', 'Your registration was successful!');
$this->addFlash('warning', 'This email addres is already registered!');
$this->addFlash('danger', 'Your account is currentl locked!');