Advanced customization of translations in Symfony2 - php

Question

I have a Symfony2 project and I am using Translation component for translating text. I have all translations in yml file like so
translation-identifier: Translated text here
Translating text looks like this from Twig
'translation-identifier'|trans({}, 'domain')
The thing is, in some cases I would like to have two different texts for same translation (not for pluralization). Here's how I would like it to work:
Define two texts in yml file for translations that need to have different texts. Each would have it's own unique suffix
translation-identifier-suffix1
translation-identifier-suffix2
Define a global rule that would define which suffix should be choosen. Psuedocode below:
public function getSuffix() {
return rand(0, 10) < 5 ? '-suffix1' : '-suffix2';
}
Twig (and PHP) would look the same - I would still specify just the identifier without suffix. Translator would then append suffix to the identifier and try to find a match. If there would be no match it would try to find a match again without suffix.

Answer 1

AFAIK, Translator component doesn't support it.
But if you want same kind of behavior, you could do by overriding the translator service.
1) Override the service
# app/config/config.yml
parameters:
translator.class: Acme\HelloBundle\Translation\Translator
First, you can set the parameter holding the service's class name to your own class by setting it in app/config/config.yml.
FYI: https://github.com/symfony/FrameworkBundle/blob/master/Resources/config/translation.xml
2) Extend the translator class provided symfony framework bundle.
FYI: https://github.com/symfony/FrameworkBundle/blob/master/Translation/Translator.php
3) Overwrite the trans function which is provider by translator component.
https://github.com/symfony/Translation/blob/master/Translator.php
Hope this helps!

Answer 2

Here is the extended translator class in case anyone ever needs it
<?php
namespace Acme\HelloBundle\Translation;
use Symfony\Bundle\FrameworkBundle\Translation\Translator as BaseTranslator;
use Symfony\Component\Translation\MessageSelector;
use Symfony\Component\DependencyInjection\ContainerInterface;
class Translator extends BaseTranslator {
const SUFFIX_1 = '_suffix1';
const SUFFIX_2 = '_suffix2';
private $suffix;
public function __construct(ContainerInterface $container, MessageSelector $selector, $loaderIds = array(), array $options = array()) {
parent::__construct($container, $selector, $loaderIds, $options);
$this->suffix = $this->getSuffix($container);
}
public function trans($id, array $parameters = array(), $domain = 'messages', $locale = null) {
if ($locale === null)
$locale = $this->getLocale();
if (!isset($this->catalogues[$locale]))
$this->loadCatalogue($locale);
if($this->suffix !== null && $this->catalogues[$locale]->has((string) ($id . $this->suffix), $domain))
$id .= $this->suffix;
return strtr($this->catalogues[$locale]->get((string) $id, $domain), $parameters);
}
private function getSuffix($container) {
return rand(0, 10) < 5 ? self::SUFFIX_1 : self::SUFFIX_2;
}
}
?>

Answer 3

As of Symfony 3, Venu's answer no longer works completely, as the translator.class parameter is no longer used.
To load your custom translator class, you now need to create a compiler pass.
<?php
namespace Acme\HelloBundle\DependencyInjection\Compiler;
use Acme\HelloBundle\Translation\Translator;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
class TranslatorOverridePass implements CompilerPassInterface
{
public function process(ContainerBuilder $container)
{
$container->getDefinition('translator.default')->setClass(Translator::class);
}
}
And this compiler pass needs to be added to the container.
<?php
namespace Acme\HelloBundle;
use Acme\HelloBundle\DependencyInjection\Compiler\TranslatorOverridePass;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\HttpKernel\Bundle\Bundle;
class AcmeHelloBundle extends Bundle
{
public function build(ContainerBuilder $container)
{
$container->addCompilerPass(new TranslatorOverridePass());
}
}