Cannot inject PSR-7 ServerRequestInterface in Middleware

[georgms]

• Laravel Version: 8.76.1
• PHP Version: 8.0.13
• Database Driver & Version: Irrelevant

Description:

It's possible to inject a PSR-7 ServerRequestInterface into controller methods. However, the same does not work with Middlewares. The handle method will always receive an Illuminate\Http\Request despite this signature:

use Psr\Http\Message\ServerRequestInterface;

…

public function handle(ServerRequestInterface $request, Closure $next): ResponseInterface
{
  …
}

Steps To Reproduce:

1. Create a Middleware with the signature public function handle(ServerRequestInterface $request, Closure $next): ResponseInterface.
2. Enable the Middleware in the Routing / Kernel.
3. Fire a request that will trigger the middleware.

Expected result

The handle method receives a ServerRequestInterface.

Actual result

TypeError: App\Http\Middleware\MyMiddleware::handle(): Argument #1 ($request) must be of type Psr\Http\Message\ServerRequestInterface, Illuminate\Http\Request given, called in […]/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php on line 167 and defined in […]/app/Http/Middleware/MyMiddleware.php:60

[henzeb]

Don't know why this popped up on the first page, but to answer the question: the middleware is part of a pipeline. In this case the pipeline is receiving an instance of Illuminate\Http\Request. There is no dependency injection going on in there. Read more about pipelines here: https://dev.to/abrardev99/pipeline-pattern-in-laravel-278p