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<?php |
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namespace SubjectivePHP\Slim\Middleware; |
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use Fig\Http\Message\RequestMethodInterface; |
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use phpDocumentor\Reflection\DocBlock\Tags\Method; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Slim\Exception\NotFoundException; |
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final class OptionsMiddleware implements RequestMethodInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $origin; |
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/** |
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* @var string[] |
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*/ |
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private $headers; |
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/** |
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* Create a new instance of OptionsMiddleware. |
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* |
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* @param string $origin Value for the Access-Control-Allow-Origin header. |
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* @param string[] $headers Value for the Access-Control-Allow-Headers header. |
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*/ |
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public function __construct(string $origin, array $headers) |
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{ |
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$this->origin = $origin; |
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$this->headers = $headers; |
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} |
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/** |
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* Invoke this middleware. |
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* |
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* @param ServerRequestInterface $request The incoming HTTP request. |
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* @param ResponseInterface $response The outgoing HTTP response. |
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* @param callable $next The next middleware in the stack. |
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* |
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* @return ResponseInterface |
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* |
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* @throws NotFoundException |
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*/ |
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public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next) : ResponseInterface |
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{ |
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if ($request->getMethod() !== self::METHOD_OPTIONS) { |
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return $next($request, $response); |
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} |
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$route = $request->getAttribute('route'); |
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if (empty($route)) { |
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throw new NotFoundException($request, $response); |
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} |
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$methods = $route->getMethods(); |
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$methods[] = self::METHOD_OPTIONS; |
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return $response->withHeader('Access-Control-Allow-Origin', $this->origin) |
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->withHeader('Access-Control-Allow-Headers', implode(',', $this->headers)) |
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->withHeader('Access-Control-Allow-Methods', implode(',', $methods)); |
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} |
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} |
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subjective-php /
slim-options-middleware
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