shipping-portal/app/Http/Resources/PackingListResource.php

<?php

namespace App\Http\Resources;

use App\Classes\ValueObjects\Constants\RoleTypes;
use App\Models\Order;
use Illuminate\Http\Resources\Json\JsonResource;

class PackingListResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return array
     */
    public function toArray($request)
    {
        $exceptionUsers = in_array(Auth()->user()->type, [RoleTypes::SHADOW_ADMIN, RoleTypes::SUPER_ADMIN]);
        $packages = !$this->packingLists()->exists() || $exceptionUsers ? $this->packages : $this->packingLists->first()->packages;

        return [
            'id' => $this->id,
            'claimant_id' => $this->claimant_id,
            'reference' => $this->reference,
            'status' => $this->status,
            'transport' => new TransportResource($this->transports()->first()),
            'type' => $this->type,
            'packages' => PackageResource::collection($packages),
            $this->mergeWhen($this->owner instanceof Order, [
                'order' => New OrderResource($this->owner)
            ])
        ];
    }
}