| public roots ( ) : Illuminate\Database\Eloquent\Collection | ||
| return | Illuminate\Database\Eloquent\Collection | |
public function roots()
{
return $this->node->newQuery()->whereNull($this->node->getQualifiedParentColumnName())->orderBy($this->node->getQualifiedLeftColumnName())->orderBy($this->node->getQualifiedRightColumnName())->orderBy($this->node->getQualifiedKeyName())->get();
}