invoiceninja/app/Transformers/EntityTransformer.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com)
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2019. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://opensource.org/licenses/AAL
 */

namespace App\Transformers;

use League\Fractal\TransformerAbstract;

class EntityTransformer extends TransformerAbstract
{
    protected $serializer;

    const API_SERIALIZER_ARRAY = 'array';
    const API_SERIALIZER_JSON = 'json';

    public function __construct($serializer = null)
    {
        $this->serializer = $serializer;
    }

    protected function includeCollection($data, $transformer, $entityType)
    {
        if ($this->serializer && $this->serializer != self::API_SERIALIZER_JSON) {
            $entityType = null;
        }

        return $this->collection($data, $transformer, $entityType);
    }

    protected function includeItem($data, $transformer, $entityType)
    {
        if ($this->serializer && $this->serializer != self::API_SERIALIZER_JSON) {
            $entityType = null;
        }

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

    public function getDefaultIncludes()
    {
        return $this->defaultIncludes;
    }

    protected function getDefaults($entity)
    {

    }
}