| public isDescendantOf ( Phalcon\Mvc\ModelInterface $subj ) : boolean | ||
| $subj | Phalcon\Mvc\ModelInterface | the subject node. |
| return | boolean | whether the node is descendant of subject node. |
public function isDescendantOf($subj)
{
$owner = $this->getOwner();
$result = $owner->{$this->leftAttribute} > $subj->{$this->leftAttribute} && $owner->{$this->rightAttribute} < $subj->{$this->rightAttribute};
if ($this->hasManyRoots) {
$result = $result && $owner->{$this->rootAttribute} === $subj->{$this->rootAttribute};
}
return $result;
}