/**
* A custom access check.
*
* @param \Drupal\Core\Session\AccountInterface $account
* Run access checks for this account.
* @param \Drupal\Core\Routing\RouteMatch $routeMatch
* Run access checks against the account provided by this router match.
*
* @return \Drupal\Core\Access\AccessResult
* Access is allowed if the id of the two accounts are the same.
*/
public function access(AccountInterface $account, RouteMatch $routeMatch)
{
$access = AccessResult::allowedIf($routeMatch && $routeMatch->getRawParameter('user') == $account->id());
$access->addCacheContexts(['user']);
return $access;
}
