ResponsableQuery.php

<?php

namespace App;

use Illuminate\Contracts\Support\Responsable;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Pagination\LengthAwarePaginator;

trait ResponsableQuery
{
    public function newEloquentBuilder($query)
    {
        return new class($query) extends Builder implements Responsable {
            protected $perPage;
            
            public function getPerPage() {
                return $this->perPage;
            }

            public function setPerPage($perPage) {
                $this->perPage = $perPage;
                return $this;
            }

            public function toResponse($request) {
                return $this->paginate($this->getPerPage())->toResponse($request);
            }
            
            protected function paginator($items, $total, $perPage, $currentPage, $options) {
                return new class ($items, $total, $perPage, $currentPage, $options) extends LengthAwarePaginator implements Responsable {
                    public function toResponse($request) {
                        $data = $this->toArray();
                        return response(
                            array_pull($data, 'data'),
                            200,
                            array_combine(
                                array_map(function ($key) { return "X-Paginator-$key"; }, array_keys($data)),
                                array_values($data)
                            )
                        );
                    }
                };
            }            
        };
    }
}