Setting 404 Status Code

Recently discovered that my 404 override was throwing errors silently into the logs in production. Trying to troubleshoot it this morning. 

This is my code in the app/Config/Routes.php file:

PHP Code:

$routes->set404Override(static function() {
   $response->setStatusCode(404);
   echo view("error_404.php");
 }); 


This produces an error message in the log (in production) (Line 23 being the $response->setStatusCode(404) line):

Code:

CRITICAL - 2023-06-21 21:30:31 --> Undefined property: CodeIgniter\Router\RouteCollection::$response
in APPPATH/Config/Routes.php on line 23.
1 APPPATH/Config/Routes.php(23): CodeIgniter\Debug\Exceptions->errorHandler()
2 SYSTEMPATH/CodeIgniter.php(954): CodeIgniter\Router\RouteCollection->Config\{closure}()
3 SYSTEMPATH/CodeIgniter.php(387): CodeIgniter\CodeIgniter->display404errors()
4 FCPATH/index.php(67): CodeIgniter\CodeIgniter->run()

If I force it to try and load a bad page in development environment, it throws:

Code:

ErrorException
Undefined variable $response
APPPATH/Config/Routes.php at line 23

22    $routes->set404Override(static function() {
23        $response->setStatusCode(404);
24        echo view("error_404.php");
25    });

I thought I was following the manual, but maybe I am missing something. Any help/suggestions would be appreciated.
Marc

$this->response->
or
$response = Services::response();

In the closure the $response is not initialize, and there is not $this->response.

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper

sorry

THANK YOU! I finally got a correct 404 response (it used to be 200 and my SEO guy was complaining about it)
Here is the code in app\Config\Routes.php (CodeIgniter version 4.4.1):

$routes->set404Override(function () {
$response = CodeIgniter\Config\Services::response();
$response->setStatusCode(404);
return view('errors/html/error_404');
});

You can see things I made with codeigniter here: itart.pro its not overly impressive as I have very little time to learn.

THANK YOU! I finally got a correct 404 response (it used to be 200 and my SEO guy was complaining about it)
Here is the code in app\Config\Routes.php (CodeIgniter version 4.4.1):

$routes->set404Override(function () {
    $response = CodeIgniter\Config\Services::response();
    $response->setStatusCode(404);
    return view('errors/html/error_404');
});

Thanks for posting this!!  Finally working correctly!