Question

I have the following (Symfony 2) PHP Template:

<?php 
$messages = $view['session']->getFlashes();
if (count($messages) > 0) : ?>
<section id="flashMessages">
    <ul>
        <?php foreach ($messages as $key => $msg) : ?>
        <li class="<?php $key ?>">
            <?php echo $msg ?>
        </li>
        <?php endforeach; ?>
    </ul>
</section>
<?php endif; ?>

I want to convert to twig in a simple way. How can I do that? Can I even count() in twig? In twig, theres the else in the for loop but I want the section#flashMessages to show only if there are flash messages

Answer 1

{% set messages = app.session.getFlashes() %}

{% if messages | length > 0 %} {# or just `if messages` #}
    <section id="flashMessages">
        <ul>
            {% for key, msg in messages %}
                <li class="{{ key }}">
                    {{ msg }}
                </li>
            {% endfor %}
        </ul>
    </section>
{% endif %}

Sorry, written right here — have no time to test it. But this should be good enough to show you the concepts.