[Solution] Symfony 3 easy translation

For twig

base.html.twig :

<p{{ 'message'|trans }}</p>

Create or update your files translation :

# tempate from app/Resources
php bin/console translation:update --dump-messages --force fr
php bin/console translation:update --dump-messages --force en

# template from AppBundle/Resources
php bin/console translation:update --dump-messages --force fr AppBundle
php bin/console translation:update --dump-messages --force en AppBundle