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<?php |
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declare(strict_types=1); |
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namespace ProjetNormandie\ArticleBundle\EventSubscriber; |
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use ApiPlatform\Symfony\EventListener\EventPriorities; |
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use ProjetNormandie\ArticleBundle\Entity\Article; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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use Symfony\Component\HttpKernel\Event\ViewEvent; |
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use Symfony\Component\HttpKernel\KernelEvents; |
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/** |
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* Event subscriber that sets the current locale on Article entities |
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* based on the HTTP_ACCEPT_LANGUAGE header |
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*/ |
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class ArticleLocaleSubscriber implements EventSubscriberInterface |
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{ |
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private array $supportedLocales; |
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private string $defaultLocale; |
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public function __construct( |
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array $supportedLocales = ['en'], |
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string $defaultLocale = 'en' |
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) { |
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$this->supportedLocales = $supportedLocales; |
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$this->defaultLocale = $defaultLocale; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function getSubscribedEvents(): array |
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{ |
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return [ |
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// This event is triggered right before the serialization process |
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KernelEvents::VIEW => ['setLocale', EventPriorities::PRE_SERIALIZE], |
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]; |
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} |
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/** |
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* Set the appropriate locale on Article entities based on HTTP_ACCEPT_LANGUAGE |
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* |
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* @param ViewEvent $event The event |
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*/ |
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public function setLocale(ViewEvent $event): void |
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{ |
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$request = $event->getRequest(); |
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$result = $event->getControllerResult(); |
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// Only process GET requests targeting Article entities |
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if (!$this->shouldProcess($request, $result)) { |
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return; |
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} |
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// Get preferred locale from HTTP_ACCEPT_LANGUAGE header |
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$locale = $this->getPreferredLocale($request); |
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// Set locale on one or more Article entities |
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$this->applyLocaleToResult($result, $locale); |
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} |
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/** |
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* Determine if this request should be processed |
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* |
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* @param Request $request The HTTP request |
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* @param mixed $result The controller result |
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* @return bool Whether the request should be processed |
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*/ |
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private function shouldProcess(Request $request, $result): bool |
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{ |
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// Only process GET requests |
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if (!in_array($request->getMethod(), ['GET'])) { |
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return false; |
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} |
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// Process single Article |
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if ($result instanceof Article) { |
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return true; |
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} |
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// Process collections containing Articles |
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if (is_array($result) || $result instanceof \Traversable) { |
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foreach ($result as $item) { |
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if ($item instanceof Article) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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/** |
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* Extract preferred locale from the HTTP_ACCEPT_LANGUAGE header |
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* |
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* @param Request $request The HTTP request |
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* @return string The preferred locale (defaulting to 'en') |
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*/ |
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private function getPreferredLocale(Request $request): string |
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{ |
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// Check for HTTP_ACCEPT_LANGUAGE header |
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$acceptLanguage = $request->headers->get('Accept-Language'); |
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if (!$acceptLanguage) { |
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return $this->defaultLocale; // Default to English |
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} |
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// Extract primary language code (fr-FR -> fr, en-US -> en, etc.) |
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$locale = substr($acceptLanguage, 0, 2); |
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// Only accept supported locales |
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if (in_array($locale, $this->supportedLocales, true)) { |
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return $locale; |
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} |
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return $this->defaultLocale; |
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} |
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/** |
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* Apply the preferred locale to Article entities in the result |
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* |
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* @param mixed $result The controller result |
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* @param string $locale The preferred locale |
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*/ |
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private function applyLocaleToResult($result, string $locale): void |
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{ |
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// Single Article |
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if ($result instanceof Article) { |
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$result->setCurrentLocale($locale); |
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return; |
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} |
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// Collection of Articles |
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if (is_array($result) || $result instanceof \Traversable) { |
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foreach ($result as $item) { |
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if ($item instanceof Article) { |
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$item->setCurrentLocale($locale); |
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} |
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} |
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} |
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} |
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} |
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projet-normandie /
article-bundle
