error code from delete or beforeDelete?

This has got to be a newbie question. I have searched, but can't seem to find an answer.

Is there a way to get an error code for why the delete or beforeDelete failed and have this passed back to the Controller instead of just false?

using the example from the documentation

1. function beforeDelete()
2. {
3. $count = $this->Product->find("count", array(
4. "conditions" => array("product_category_id" => $this->id)
5. ));
6. if ($count == 0) {
7. return true;
8. } else {
9. return false;
10. }
11. }

in this example if there are products left in the category ($count >0) it will return false.  But how does the controller know that this was reason?  What if before delete checked for products AND subcategories?  The controller/view would want to send a message to user as to why the delete failed.

What am I missing?

Thanks,
bill

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