How to use a Symfony Translator in my Twig template?

Question

I've been working on translating my application, I pull the translations from my database and add them to a catalogue. Everything works within Symfony, if I echo a translation with $translator->trans('TEST_TRANSLATION') for example it echoes the correct value, so I assume that my translations are correct.

Now I use Twig as my template engine, which supports translations with the {% trans %} tags. Sadly the translations from the translator variable don't work within Twig and after Googling for quite a while I can't seem to find a working solution.
I've read about doing something with adding extensions using $twig->addExtension(), but I can't get that to work.

I would appreciate it if someone could point me in the right direction or maybe even provide a clearer explanation on how to achieve using the translator with the {% trans %} tags.

Thanks in advance.

Edit: Here's the code from the Controller I use to create a translator:

$this->translator = new Translator('en');
$this->translator->addLoader('array', new ArrayLoader());
$this->translator->addResource('array', $translations, 'en');

echo $this->translator->trans('TEST_TRANSLATION');

The $translations variable contains an array with the translations, when using echo it shows the given translation correctly. How can I get this translator to work in Twig when using <p>{% trans %}TEST_TRANSLATION{% endtrans %}</p>?

Edit 2: I've been trying all kinds of stuff in the last 1,5 hours, but nothing works. I have found out however that giving the translator to the array for the render function of the Twig template enables me to acces its variables, I do this as follows:

return $this->render('test/transTest.html.twig', array('translator'=>$this->translator));

If I use the above I can access the translation variables within Twig by doing:

<p>{{ translator.trans('TEST_TRANSLATION') }}</p>

Using<p>{{ translator.locale }}</p> also gives me the right locale information.

I am pretty sure now that nothing is wrong with translations, but the site I'm working on uses {% trans %} for translations within Twig and I still have no idea how to get my Translator translations to work with those. Any help would be greatly appreciated.

It doesn't work how? Make sure you have correct locale set {{ app.request.locale }} — martin
I've tried both the {% trans %} tags and {{'TEST_TRANSLATION'|trans}}, the locale is also correct. It seems like Twig cannot access the translator class I create in the Controller. I'm searching for a way to use the translator I create in the Controller within Twig. — user2467128

LFI LFI · Accepted Answer · 2016-11-07T13:18:32

Translation are not working in twig with the tag {% trans %} or with the filter |trans because you are not using the default translator service of Symfony but one you just instantiate.

You can load the translation from the database in a custom loader service declared in the container with the tag translation.loader so that translator service will be aware of them.

See this SO post and the (quite old) advise tutorial

How to use a Symfony Translator in my Twig template?

1 Answers