App\Middleware\CsrfViewMiddleware::__invoke PHP Method

    public function __invoke($request, $response, $next)
    {
        $this->container->view->getEnvironment()->addGlobal('csrf', ['field' => '
				<input type="hidden" name="' . $this->container->csrf->getTokenNameKey() . '"
				 value="' . $this->container->csrf->getTokenName() . '">
				<input type="hidden" name="' . $this->container->csrf->getTokenValueKey() . '"
				 value="' . $this->container->csrf->getTokenValue() . '">
			']);
        $_SESSION['old'] = $request->getParams();
        $response = $next($request, $response);
        return $response;
    }