Example without translation support.
<!-- MyProjectMyBundle:Default:index.html.twig -->
<!-- Include prerequisite librairies and bundles -->
<script type="text/javascript" src="__YOUR_FRAMEWORK_URL__"></script>
<!-- Call JsFormValidationBundle -->
{{ JSFV(form) }}
<!-- Display the form -->
<form action="{{ path('myform') }}" method="post" {{ form_enctype(form) }}>
{{ form_widget(form) }}
<input type="submit" />
</form>
But we have to keep the compute message function.