liwo/app/Http/Resources/CommentResource.php

<?php

namespace App\Http\Resources;

use Illuminate\Http\Resources\Json\JsonResource;

class CommentResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return array
     */
    public function toArray($request)
    {
        $resource = [
            '_service' => 'task',
            '_resource' => 'comment',
        ];

        foreach ($this->getAttributes() as $attribute => $value) {
            switch ($attribute) {
                case 'task_id' :
                case 'user_id' :
                case 'body' :
                    $resource[$attribute] = $value;
                    break;
            }
        }

        return $resource;
    }
}