/**
* Deletes node and it's descendants.
* @throws \Exception.
* @return boolean whether the deletion is successful.
*/
public function delete()
{
if ($this->isLeaf()) {
$result = parent::delete();
} else {
$result = $this->objects()->filter(['lft__gte' => $this->lft, 'rgt__lte' => $this->rgt, 'root' => $this->root])->delete();
}
$this->shiftLeftRight($this->rgt + 1, $this->lft - $this->rgt - 1);
return (bool) $result;
}
