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<?php |
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/** |
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* This File is Part of the Validus Translation package. |
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* |
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* @copyright (c) 2018 Validus <https://github.com/ValidusPHP/> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Validus\Translation\Middleware; |
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use Negotiation\AcceptLanguage; |
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use Negotiation\LanguageNegotiator; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use Symfony\Component\Translation\Translator; |
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class TranslatorMiddleware implements MiddlewareInterface |
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{ |
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/** @var Translator $translator */ |
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protected $translator; |
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/** @var LanguageNegotiator $negotiator */ |
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protected $negotiator; |
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/** @var array $priorities */ |
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protected $priorities; |
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/** |
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* LocalizationMiddleware constructor. |
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* |
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* @param Translator $translator |
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* @param array|null $priorities |
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*/ |
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public function __construct(Translator $translator, ?array $priorities = null) |
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{ |
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$this->translator = $translator; |
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$this->priorities = $priorities ?? [$translator->getLocale()]; |
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$this->negotiator = new LanguageNegotiator(); |
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} |
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/** |
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* Process an incoming server request and return a response, optionally delegating |
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* response creation to a handler. |
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* |
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* @param ServerRequestInterface $request |
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* @param RequestHandlerInterface $handler |
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* |
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* @return ResponseInterface |
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*/ |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$local = $this->getLocaleFromRequest($request); |
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if (null !== $local) { |
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$this->translator->setLocale($local); |
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} |
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return $handler->handle($request); |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* |
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* @return string|null |
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*/ |
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protected function getLocaleFromRequest(ServerRequestInterface $request): ?string |
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{ |
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$header = $request->getHeaderLine('Accept-Language'); |
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if ('' === $header) { |
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return null; |
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} |
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/** @var AcceptLanguage $language */ |
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$language = $this->negotiator->getBest($header, $this->priorities); |
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return null === $language ? null : $language->getValue(); |
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} |
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} |
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ValidusPHP /
translation
