nexusphp/app/Http/Resources/ForumResource.php

<?php

namespace App\Http\Resources;

use Illuminate\Http\Resources\Json\JsonResource;

class ForumResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return array
     */
    public function toArray($request)
    {
        return [
            'id' => $this->id,
            'name' => $this->name,
            'description' => $this->description,
            'postcount' => $this->postcount,
            'topiccount' => $this->topiccount,
            'moderators' => UserResource::collection($this->whenLoaded("moderators")),
        ];
    }
}