Drupal 8 Class 'Drupal\Core\Session\AccountInterface' not found - drupal

Question

I am trying to write a custom php script in my Drupal site root that checks if the user is logged in. To check this I import bootstrap.inc. However when I do this it throws me this error
This is the code of the php script in my site root:
<?php
require_once './core/includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
global $user;
var_dump($user->uid);
?>
Anyone has a solution to this?

Answer 1

To bootstrap Drupal 8, you need different code. Drupal 8 doesn't have any drupal_bootstrap() function, so the code you are using would throw a PHP error.
You can use authorize.php as guideline to write your own script.
use Drupal\Core\DrupalKernel;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
$autoloader = (require_once 'autoload.php');
try {
$request = Request::createFromGlobals();
$kernel = DrupalKernel::createFromRequest($request, $autoloader, 'prod');
$kernel->prepareLegacyRequest($request);
} catch (HttpExceptionInterface $e) {
$response = new Response('', $e->getStatusCode());
$response
->prepare($request)
->send();
exit;
}
\Drupal::moduleHandler()
->addModule('system', 'core/modules/system');
\Drupal::moduleHandler()
->addModule('user', 'core/modules/user');
\Drupal::moduleHandler()
->load('system');
\Drupal::moduleHandler()
->load('user');
$account = \Drupal::service('authentication')
->authenticate($request);
if ($account) {
\Drupal::currentUser()
->setAccount($account);
if (\Drupal::currentUser()->isAuthenticated() {
// The user is logged-in.
}
}

Answer 2

I fixed this by using a complete different approach. I wrote a module which sets a cookie on the moment that the user logs in to drupal (I use the hook_user_login for this). When the user logs out I delete that cookie (I use the hook_user_logout for this). This is the code of my test.module:
/**
* #param $account
*/
function intersoc_content_user_login($account)
{
setcookie("user", "loggedin", time() + (86400 * 30),"/");
}
/**
* #param $account
*/
function intersoc_content_user_logout($account)
{
if (isset($_COOKIE['user']))
{
unset($_COOKIE['user']);
setcookie('user', '', time() - 3600, '/'); //Clearing cookie
}
}
Then in my custom script in the site root I check if the cookie is set. When the cookie exists => The user is logged in. If the cookie doesn't exist then the user isn't logged in. The isLoggedIn() function below:
/**
* #return bool which indicates if the user is logged in or not
*/
private function isLoggedIn()
{
if(isset($_COOKIE["user"]))
{
return TRUE;
}
else
{
return FALSE;
}
}
It isn't the most beautiful solution, but it works!!!