Slim4-notes

Beginning of a cheat sheet

Pulled from various sources..

• slim4 cheatsheet
• pada middleware for authentication
• Create JWT for auth use in Slim4
• configure middleware
• slim-skeleton auth
• middleware with closure and class

Get parsed body

$request->getParsedBody()

• Apparently need some middleware for this to work

$app->addBodyParsingMiddleware();

Returning a redirect

/**
 * Create a redirect response;
 * @param string $newLocation - where you wish to redirect the user.
 * @param Slim\Psr7\Response $response - the existing response to work with
 * @param bool $useTemporaryRedirect - whether this redirect is temporary, or browser should cache it.
 * @return Slim\Psr7\Response - the redirect response.
 */
function redirect(
    string $newLocation, 
    bool $useTemporaryRedirect=true
) : Slim\Psr7\Response
{
    $httpCode = ($useTemporaryRedirect) ? 302 : 301;
    $response = new \Slim\Psr7\Response($httpCode);
    $response = $response->withHeader('Location', $newLocation);
    return $response;
}

Auth Middleware

Not going to bother copy of all the code, but look at the cheetsheet linked above close to the bottom of the page.

Adding a 404 or other err pages

This also looks like a middleware function as it gets called before actually hitting the routes

$app = Slim\Factory\AppFactory::create();

// register any custom middleware....
$app->addMiddleware(new SomeCustomMiddleware());
$app->addMiddleware(new AnotherCustomMiddleware());

// register the error middleware. This must be registered last so that it gets executed first.
$errorMiddleware = $app->addErrorMiddleware(
    $displayErrorDetails = (ENVIRONMENT === "dev"),
    $logErrors=true,
    $logErrorDetails=true
);

// Create your 404 handler...
$errorMiddleware->setErrorHandler(\Slim\Exception\HttpNotFoundException::class, function (
    \Psr\Http\Message\ServerRequestInterface $request,
    \Throwable $exception,
    bool $displayErrorDetails,
    bool $logErrors,
    bool $logErrorDetails
) {
    $response = new \Slim\Psr7\Response();
    $body = new View404();
    $view = new ViewCustom404Page();
    $response->getBody()->write((string)$view);
    return $response->withStatus(404);
});
// register routes/controllers here....
$app->run();