SLIM FRAMEWORK 3: Can't pass variable from middleware to controller - php

Question

What's wrong with my code? I can't pass variable from my Auth middleware to controller. In controller, the attribute "null".
Index:
$c = new \Slim\Container($configuration);
$api = new \Slim\App($c);
$api->group('/', function () use ($api) {
$this->post('login', '\AuthController:login');
...
$this->post('getIngredientsCategories', '\IngredientsController:getIngredientsCategories');
})->add(new ApiAuthenticateController());
$api->run();
Middleware (ApiAuthenticateController)
use \Firebase\JWT\JWT;
class ApiAuthenticateController
{
public function __invoke($request, $response, $next)
{
$jwtDecoded = null;
$req = $request->getUri()->getPath();
$_req = RequestValidatorController::isRequestEnabled($req);
if ($_req !== false) {
if ($_req['login_required']) {
$jwt = filter_var($request->getHeaderLine('AUTHORIZATION'), FILTER_SANITIZE_STRING);
$jwt = explode(" ", $jwt)[1];
try {
$jwtDecoded = JWT::decode($jwt, JWT_SECRET, array('HS256'));
} catch (\Exception $e) {
return $this->deny_access($response);
}
}
$request = $request->withAttribute('foo', $jwtDecoded);
//HERE - attribute "foo" in $request exists - checked by var_dump()..
$response = $next($request, $response);
$response = $response->withHeader('Content-type', 'application/json');
return $response;
} else {
return $this->deny_access($response);
}
}
IngredientsController
class IngredientsController extends Controller
{
private $_ingredients;
public function __construct(\Interop\Container\ContainerInterface $container)
{
parent::__construct($container);
}
}
Controller
class Controller
{
private $request;
private $response;
protected $data;
protected $method;
protected $user;
public function __construct(Interop\Container\ContainerInterface $container)
{
$this->request = $container->get('request');
$this->response = $container->get('response');
$this->data = (object)Tools::stripInput($this->request->getParsedBody());
$this->method = $this->request->getUri()->getPath();
$this->user = $this->request->getAttribute('foo');
var_dump($this->user);
// returns NULL. if $this->request->getAttributes()... returns empty
}
}
Please note, that code is "cleaned" for this post and for better readability, some functions and conditions where deleted. Code is working - sorry for possible typos.

Answer 1

the problem is coming from here
in the middleware ApiAuthenticateController, you should change the code like this
$request = $request->withAttribute('foo', $jwtDecoded);
// you should return the $next here not to do anything else
return $next($request, $response);
and in your IngredientsController:getIngredientsCategories part of code you should return the
function getIngredientsCategories ($request, $response, $args){
//do your job...
$response = $response->withHeader('Content-type', 'application/json');
return $response;
}
and finally, in the constructor, you have don't have the actual $request after the middleware I think so you would have the $this->request->getAttributes() inside your getIngredientsCategories function
Hope it helps.