CODEWITHSUNDEEP
phpapislim
Victor Hugo
Victor Hugo

Reputation: 135

Error using Slim Framework (v4) Middleware

I'm trying to use a middleware in my Slim route but i have an error:

Fatal error: Uncaught ArgumentCountError: Too few arguments to function Api\Middleware\Auth::__invoke(), 2 passed

I'm trying:

Index File

<?php

use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Slim\Factory\AppFactory;

use Api\Middleware\Auth;

require __DIR__ . '../../../vendor/autoload.php';

$app = AppFactory::create();

$app->add(new Auth);

$app->get('/', function (Request $request, Response $response, $args) {
    $response->getBody()->write("Start Project");
    return $response;
});

$app->run();

Middleware File

<?php

namespace Api\Middleware;

class Auth {
  public function __invoke($request, $response, $next) {
    echo "Middleware";
    return $next($request, $response);
  }
}

I'm reading and copying the docs but cannot fix that error.

Upvotes: 0

Views: 1046

Answers (1)

Michal Hynčica
Michal Hynčica

Reputation: 6144

Based on the documentation you've linked the middleware in Slim is either the function that takes two arguments, or a object with __invoke magic method that takes two arguments. The arguments passed are Psr\Http\Message\ServerRequestInterface and Psr\Http\Server\RequestHandlerInterface.

Your implementation of middleware is expecting 3 arguments.

It should look like this:

class Auth {
    public function __invoke($request, $handler) {
        echo "Middleware";
        return $handler->handle($request);
    }
}

Upvotes: 2

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