cakePHP ACL when not logged in
===

I have an application where all users have to be logged in. I'm using the `Auth` component for authentication, and `ACL` for authorization.

I'm basically doing something like this in the `beforeFilter() of an admin controller:

    if(!$this->Acl->check(array('model' => 'User', 'foreign_key' => $this->Auth->user()['id']), 'Admin', 'read')) 
    {
        pr('You are NOT allowed to be here!');
    } 

This works well for any logged in user, some users can see the admin pages, and some cannot.

However, when I go to */admin* when NOT logged in, I get:

> AclNode::node() - Couldn&#039;t find Aro node identified by
> &quot;Array ( [Aro0.model] =&gt; model [Aro0.foreign_key] =&gt; U )
> &quot;


(I don't know why it prints the 'U'). It's like it's trying to do the lookup, but since the user information isn't there, it crashes. I'm sure I'm missing something here. I can avoid the problem by checking if the user is logged in:

    if($this->Auth->user()) //do the ACL check

But I don't like that approach, and I guess it is wrong.

Do I need some kind of default setting?