How to translate full page in symfony?

@dana 

To translate a full page in Symfony, you can follow these steps:

1. Install the Translation component: If you haven't already, you need to install the Translation component in your Symfony project. You can do this by running the following Composer command:

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composer require symfony/translation

1. Configure your translations: Open the config/packages/translation.yaml file and configure your translation settings. For example, you can specify the default locale and available locales:

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framework:
    default_locale: en
    translator:
        default_path: '%kernel.project_dir%/translations'
        fallbacks:
            - en
        paths:
            - '%kernel.project_dir%/src/translations'

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# translations/messages.fr.yaml
welcome.page.title: 'Bienvenue sur ma page'

1. Set the locale: In your controller or wherever the page is rendered, set the locale based on the user's preference or any other logic. For example, you can use the SetLocaleEvent to dynamically set the locale:

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use SymfonyComponentHttpKernelEventRequestEvent;

public function onKernelRequest(RequestEvent $event)
{
    $request = $event->getRequest();
    $locale = $request->query->get('locale');
    $request->setLocale($locale);
}

By following these steps, your Symfony application will use the appropriate translation file based on the user's locale and display the translated strings on the full page.