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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Yii\Web\Middleware; |
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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 Yiisoft\DataResponse\DataResponse; |
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use Yiisoft\DataResponse\DataResponseFormatterInterface; |
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/** |
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* ContentNegotiator supports response format negotiation. |
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*/ |
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final class ContentNegotiator implements MiddlewareInterface |
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{ |
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private array $contentFormatters; |
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public function __construct(array $contentFormatters) |
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{ |
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$this->checkFormatters($contentFormatters); |
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$this->contentFormatters = $contentFormatters; |
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} |
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/** |
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* @param array $contentFormatters |
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*/ |
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public function withContentFormatters(array $contentFormatters): self |
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{ |
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$this->checkFormatters($contentFormatters); |
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$new = clone $this; |
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$new->contentFormatters = $contentFormatters; |
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return $new; |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$response = $handler->handle($request); |
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if ($response instanceof DataResponse && !$response->hasResponseFormatter()) { |
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$accepted = $request->getHeader('accept'); |
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foreach ($accepted as $accept) { |
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foreach ($this->contentFormatters as $contentType => $formatter) { |
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if (strpos($accept, $contentType) !== false) { |
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return $response->withResponseFormatter($formatter); |
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} |
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} |
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} |
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} |
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return $response; |
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} |
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private function checkFormatters(array $contentFormatters): void |
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{ |
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foreach ($contentFormatters as $contentType => $formatter) { |
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if (!(is_string($contentType) && $formatter instanceof DataResponseFormatterInterface)) { |
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throw new \RuntimeException('Invalid formatter type.'); |
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} |
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} |
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} |
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} |
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yiisoft /
yii-web
