shipping-portal/app/Transformers/DocumentTransformer.php

<?php

namespace App\Transformers;

use App\Models\Document;
use Carbon\Carbon;
use League\Fractal\Manager;
use League\Fractal\Resource\Collection;
use League\Fractal\Resource\Item;
use League\Fractal\Serializer\ArraySerializer;
use League\Fractal\TransformerAbstract;

class DocumentTransformer extends TransformerAbstract
{

    /**
     * Default Includes for Document Module
     * @var array
     */
    protected array $defaultIncludes = [
        'files'
    ];
    /**
     * Available includes
     * @var array
     */
    protected array $availableIncludes = [
        'owner'
    ];

    public function transform(Document $document): array
    {
        return [
            'id' => $document->id,
            'reference' => $document->reference,
            'status' => $document->status,
            'document_type' => $document->document_type,
            'created_at' => Carbon::parse($document->created_at)->format('d-m-Y h:i:s A')
        ];
    }

    public function includeFiles(Document $document): Collection
    {
        $files = $document->files;
        return $this->collection($files, new FileTransformer(true));
    }

    /**
     * include owner data
     * @param Document $document
     * @return Item
     */
    public function includeOwner(Document $document): Item
    {
        $owner = $document->owner;

        $transformer = new CompanyTransformer();
        $transformer->setDefaultIncludes([ 'contact', 'employee', 'company_module']);

        return $this->item($owner, $transformer);
    }

}