gistfile1.txt

    $collection = App\Post::all();
    $collection->macro('withBody', function(callable $callback){

        foreach ($this->items as $key => $item) {

            if (!$item->body) {
                continue;
            }

            if ($callback($item, $key) === false) {
                break;
            }
        }

        return $this;
    });
    $collection->proxy('withBody');
    $collection->withBody->touch();
    dd($collection);

Uma maneira de definir scopes com HighOrderCollection na a collection