Laravel query builder for recursive results? E.g. id, parent_id

Question

So I have data structured like this:

id|parent_id|name
1 |null     |foo
2 |1        |bar
3 |2        |baz

So basically foo->bar->ba

Answer 1

So after fiddling around with the merge() method for the Collections class:

public static function ancestors($id)
{
    $ancestors = Model::where('id', '=', $id)->get();

    while ($ancestors->last()->parent_id !== null)
    {
      $parent = Model::where('id', '=', $ancestors->last()->parent_id)->get();
      $ancestors = $ancestors->merge($parent);
    }

    return $ancestors;
}

That will produce what I needed, however I believe it can be more cleaner so please feel free to edit it!