Re: error code from delete or beforeDelete?

...or even better:

try {
    if ($this->Category->delete($id)) {
        $this->Session->setFlash('Category has been deleted');
        $this->redirect(array('action' => 'index'));
    } else {
        $this->Session->setFlash('Unknown error');
    }
} catch (NotEmptyCategoryException $e) {
    $this->Session->setFlash('This category is not empty');
}
$this->redirect($this->referer());

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