Laravel Get ancestors (URL)

In Laravel, I have a table which contains id, parent_id, slug (Self-referring),

When I have an ID, I need to get all its ancestors in a format like this (Separated by "/").

level1/level2/level3

But in an efficient way without a package like "laravel-nestedset ".

I have implemented it like this.

public function parent()
{
    return $this->belongsTo('Collection', 'parent_id');
}

public function getParentsAttribute()
{
    $parents = collect([]);

    $parent = $this->parent;

    while(!is_null($parent)) {
        $parents->push($parent);
        $parent = $parent->parent;
    }

    return $parents;
}

Any other way to do it efficiently and separated by "/" ?

via Chebli Mohamed