Sorting 如何在sortBy和where运算符获取的集合中使用分页？

我需要为我的收藏分页，我必须应用大量的过滤器。但我无法做到这一点。我是拉威尔的新手，请给我指路。 我的控制器：

public function index(Request $request)
{
    $view = $request['view'] ? $request['view'] :'grid'; 
    $purpose =  $request['purpose'] ? $request['purpose'] : 'rent'; 
    $sort =  $request['sort'] ? $request['sort'] : 'asc'; 

    $properties = $properties->where('purpose' , $purpose);
    if($sort == 'asc');
        $properties = $properties->sortBy('price');
     else 
         $properties = $properties->sortByDesc('price');
    $properties = $properties->paginate(5);

    return view('frontend.properties.index', [ 'view'=>$view , 'properties' => $properties , 'request'=> $request->all()  ]);
}

---

我遇到了这个问题，为了解决这个问题，我创建了一个名为PaginateCollection的特性：

/*
 * Paginate the Laravel Collection before and/or after filtering.
 *
 */
trait PaginateCollection
{
    /**
     * Paginate the collection.
     *
     * @param   \Illuminate\Support\Collection|\Illuminate\Database\Eloquent\Collection  $collection
     * @param   integer  $perPage
     * @param   integer  $currentPage
     * @return  \Illuminate\Pagination\LengthAwarePaginator
     */
    public function paginate($collection, $perPage = 10, $currentPage = 1)
    {
        $offSet = ($currentPage * $perPage) - $perPage;

        $otherParams = [
            'path'  => request()->url(),
            'query' => request()->query()
        ];

        return new LengthAwarePaginator(
            $collection->forPage(Paginator::resolveCurrentPage() , $perPage),
            $collection->count(),
            $perPage,
            Paginator::resolveCurrentPage(),
            $otherParams
        );
    }
}

也许，这会对你有所帮助