exchange/app/Transformers/PageTransformer.php

<?php

namespace App\Transformers;

use App\Models\Page;
use League\Fractal\TransformerAbstract;

class PageTransformer extends TransformerAbstract
{
    private $locale;

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

    public function transform(Page $page)
    {
        return [
            'id' => $page->id,
            'title' => $page->title,
            'content' => html_entity_decode($page->getTranslations('content', [$this->locale])[$this->locale]) ?? '-',
        ];
    }
}