weilaibike-api/app/Serializers/CustomSerializer.php

<?php

namespace App\Serializers;

use League\Fractal\Pagination\PaginatorInterface;
use League\Fractal\Serializer\ArraySerializer;

class CustomSerializer extends ArraySerializer
{
    /**
     * Serialize a collection.
     *
     * @param string $resourceKey
     * @param array $data
     *
     * @return array
     */
    public function collection($resourceKey, array $data)
    {
        $resultData = ['data' => $data, 'status_code' => 200, 'message' => 'success'];
        if (!empty($resourceKey)) {
            $resultData['total'] = $resourceKey;
        }
        return $resultData;
    }

    public function array(){}

    /**
     * Serialize an item.
     *
     * @param string $resourceKey
     * @param array $data
     *
     * @return array
     */
    public function item($resourceKey, array $data)
    {
        return ['data' => $data, 'status_code' => 200, 'message' => 'success'];
    }

    /**
     * Serialize null resource.
     *
     * @return array
     */
    public function null()
    {
        return ['data' => [], 'status_code' => 200, 'message' => 'success'];
    }

//    /**
//     * Serialize null resource.
//     *
//     * @return array
//     */
//    public function null()
//    {
//        return null;
//    }
    /**
     * Serialize the paginator.
     *
     * @param PaginatorInterface $paginator
     *
     * @return array
     */
    public function paginator(PaginatorInterface $paginator)
    {
        $currentPage = (int) $paginator->getCurrentPage();
        $lastPage = (int) $paginator->getLastPage();
        $pagination = [
            'total' => (int) $paginator->getTotal(),
            'count' => (int) $paginator->getCount(),
            'per_page' => (int) $paginator->getPerPage(),
            'current_page' => $currentPage,
            'total_pages' => $lastPage,
        ];
        $pagination['links']['previous'] = null;
        $pagination['links']['next'] = null;
        if ($currentPage > 1) {
            $pagination['links']['previous'] = $paginator->getUrl($currentPage - 1);
        }
        if ($currentPage < $lastPage) {
            $pagination['links']['next'] = $paginator->getUrl($currentPage + 1);
        }
        if (!array_filter($pagination['links'])) {
            $pagination['links'] = null;
        }
        return ['pagination' => $pagination];
    }
}