Allow to update unpublished node of sub user

Question

I have a site where I work with main users and sub users (users created by a main user). Using permissions I allow these users to edit other users nodes.

Using a script inside hook_node_access I make sure access is only allowed for users that are related to each other.

The stripped version of my code looks something like:

hook_node_access(NodeInterface $node, $op, $account){
  if ($op == 'update') {
    $uids = [1,2,3,4] //array of user ids related to each other

    // when node author is not in user id array...forbid access
    return AccessResult::forbiddenIf(!in_array($account->id(), $uids))->cachePerUser()->addCacheableDependency($node);
  }
}

This works but when a none author tries to edit a unpublished node I get an error. The path 'node/x' is either invalid or you do not have access to it.

What can I do to give a none author update access to a unpublished node?

Answer 1

I discovered that having problems with updating the node is caused by restrictions in viewing the node. Because users are not able to view unpublished nodes of other users it was not possible to update them for some reason.

I changed the view access for these users so they are able to view unpublished nodes of other users and now updating the nodes is possible.