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<?php
namespace Drupal\user\Access;
use Drupal\Core\Access\AccessResult;
use Drupal\Core\Routing\Access\AccessInterface;
use Drupal\Core\Session\AccountInterface;
use Symfony\Component\Routing\Route;
/**
* Determines access to routes based on roles.
*
* You can specify the '_role' key on route requirements. If you specify a
* single role, users with that role with have access. If you specify multiple
* ones you can conjunct them with AND by using a "," and with OR by using "+".
*/
class RoleAccessCheck implements AccessInterface {
/**
* Checks access.
*
* @param \Symfony\Component\Routing\Route $route
* The route to check against.
* @param \Drupal\Core\Session\AccountInterface $account
* The currently logged in account.
*
* @return \Drupal\Core\Access\AccessResultInterface
* The access result.
*/
public function access(Route $route, AccountInterface $account) {
// Requirements just allow strings, so this might be a comma separated list.
$rid_string = $route->getRequirement('_role');
$explode_and = array_filter(array_map('trim', explode(',', $rid_string)));
if (count($explode_and) > 1) {
$diff = array_diff($explode_and, $account->getRoles());
if (empty($diff)) {
return AccessResult::allowed()->addCacheContexts(['user.roles']);
}
}
else {
$explode_or = array_filter(array_map('trim', explode('+', $rid_string)));
$intersection = array_intersect($explode_or, $account->getRoles());
if (!empty($intersection)) {
return AccessResult::allowed()->addCacheContexts(['user.roles']);
}
}
// If there is no allowed role, give other access checks a chance.
return AccessResult::neutral()->addCacheContexts(['user.roles']);
}
}