File: app/Resources/HerzultForumBundle/views/Post/list.xml.twig

{% for post in posts %}
    <entry>
        <author>
            <name>{{ post.authorName }}</name>
        </author>
        <published>{{ post.createdAt|date('c') }}</published>
        <link rel="alternate">{{ forum_urlForPost(post, true) }}</link>
    </entry>
{% endfor %}