How can I pass locale to Twig extension? about mezzio

[weierophinney]

Well you have to pass locale variable to twig in middleware

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Originally posted by @vaclavvanik at zendframework/zend-expressive#524 (comment)

[weierophinney]

My Twig extension loads translator, but it needs the locale information. So how can I pass the locale from middleware to Twig extension or how can I get it in the extension?

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Originally posted by @back-2-95 at zendframework/zend-expressive#524 (comment)

[weierophinney]

Inject the translator extension into the locale detection middleware.
Update the locale after detection into the extension.

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Originally posted by @geerteltink at zendframework/zend-expressive#524 (comment)

[weierophinney]

I created static method in the Extension class and I set locale in Localization middleware after detection.

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Originally posted by @back-2-95 at zendframework/zend-expressive#524 (comment)

[weierophinney]

Actually, you don't need to inject the locale into the extension. You can set the default locale directly in the translator. Here is how I did it a while back (old code):

<?php
declare(strict_types = 1);

namespace App\Middleware\I18n;

use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Symfony\Component\Translation\TranslatorInterface;
use Zend\Diactoros\Response\RedirectResponse;
use Zend\Stratigility\MiddlewareInterface;

class LocalizationMiddleware implements MiddlewareInterface
{
    private $translator;

    public function __construct(TranslatorInterface $translator)
    {
        $this->translator = $translator;
    }

    public function __invoke(Request $request, Response $response, callable $out = null) : Response
    {
        $acceptedLanguages = ['en', 'nl', 'fr', 'de', 'es'];
        $locale = $request->getAttribute('locale');

        // If there is no or an invalid locale
        if (!$locale || !in_array(substr(trim($locale), 0, 2), $acceptedLanguages, true)) {
            // Try the user preferred locales
            $userLocales = $request->getServerParams()['HTTP_ACCEPT_LANGUAGE'] ?? '';
            foreach (explode(',', $userLocales) as $userLocale) {
                if (in_array(substr(trim($userLocale), 0, 2), $acceptedLanguages, true)) {
                    $locale = $userLocale;
                    break;
                }
            }
        }

        // Fallback to first accepted language
        if (!$locale) {
            $locale = $acceptedLanguages[0];
        }

        // Only the language is needed
        $locale = substr(trim($locale), 0, 2);

        if ($request->getUri()->getPath() === '/') {
            // Redirect and set the locale for the homepage
            return new RedirectResponse('/' . $locale);
        }

        // Set current locale
        $this->translator->setLocale($locale);

        // Get response first, apply content language later
        if (null !== $out) {
            $response = $out($request->withAttribute('locale', $locale), $response);
        }

        // Append the preferred language if it's different from the locale
        if ($acceptedLanguages[0] !== $locale) {
            $locale .= ', ' . $acceptedLanguages[0];
        }

        // Add the content language to the response
        return $response->withHeader('Content-Language', $locale);
    }
}

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Originally posted by @geerteltink at zendframework/zend-expressive#524 (comment)