Case insensitive routes

Hey team,

Ran into the issue of wanting case insensitive routes and couldn’t find anything super helpful out there so figured I’d document it here incase anyone else runs into this.

You can create middleware like below:

declare(strict_types = 1);

namespace App;

use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;

class Lowercase implements MiddlewareInterface
     * @var ResponseFactoryInterface
    private $responseFactory;

     * Whether returns a 301 response to the new path.
    public function redirect(ResponseFactoryInterface $responseFactory): self
        $this->responseFactory = $responseFactory;

        return $this;

     * Process a request and return a response.
    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
        $uri = $request->getUri();
        $path = strtolower($uri->getPath());

        if ($this->responseFactory && ($uri->getPath() !== $path)) {
            return $this->responseFactory->createResponse(301)
                ->withHeader('Location', (string) $uri->withPath($path));

        return $handler->handle($request->withUri($uri->withPath($path)));

And then adding it through:

$app->add(new Lowercase());