Hello,

  I recently worked on translation system, and I had some tricky needs
(translations are stored in database, cached in Redis and each
domain/locale should have a Redis key with the last update of catalog).

  Currently, the implementation is very raw (option cache_dir) and suffer
from lot of limitations:

   - Not warmed
   - Clear cache to update translations
   - And so on

  I would like to develop this part to add some warming/cache mechanism,
powerful enough to support the case I have (even if I need to adapt it to
my work).

  We could also take benefit from resource watching to detect catalog
updates with file systems. Well it's a big topic in translations and I
would like to have your advice about it.

  Should probably be discussed during a IRC meeting, but first, let's
discuss of it here.

On Dec 15, 2011, at 13:38 , Alexandre Salomé wrote:

I havent done much with the translation layer myself and in the few places where I did it was very limited.
But sounds like this is indeed an important topic to address.

Just FYI for the cache layer there is a PR that might be relevant for cache clearing:
https://github.com/symfony/symfony/pull/2857

regards,
Lukas Kahwe Smith
m...@pooteeweet.org

The most difficult here is the @api interface, because it cannot be
changed. I think it's a problem, because here, it would be great to move
the "loader/resource" logic to some back-end service.

Here is the @api contract:

*Translator*

class Translator implements TranslatorInterface
{
    public function __construct($locale, MessageSelector $selector)
    public function addLoader($format, LoaderInterface $loader)
    public function addResource($format, $resource, $locale, $domain =
'messages')
    public function setLocale($locale)
    public function getLocale()
    public function setFallbackLocale($locale)
    public function trans($id, array $parameters = array(), $domain =
'messages', $locale = null)
    public function transChoice($id, $number, array $parameters = array(),
$domain = 'messages', $locale = null)

*LoaderInterface*

interface LoaderInterface
{
    function load($resource, $locale, $domain = 'messages');