Олег Максименко

class SiteController extends BaseController
{

    /**
     * @var
     */
    protected $ci;

    /**
     * @param Container $ci
     */
    public function __construct(Container $ci)
    {
        $this->ci = $ci;
    }

    /**
     * @param Request $request
     * @param Response $response
     * @param $args
     * @return \Psr\Http\Message\ResponseInterface|Response
     */
    public function actionIndex(Request $request, Response $response, $args)
    {
        /** @var \Slim\Views\PhpRenderer $renderer */
        $renderer = $this->ci->get('view');

        // some code

        return $response->withRedirect('/auth/');
    }

}