course-site/app/Http/Resources/News/MessageResource.php

<?php

/*
 * This file is part of the Jiannei/lumen-api-starter.
 *
 * (c) Jiannei <longjian.huang@foxmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace App\Http\Resources\News;

use Illuminate\Http\Resources\Json\JsonResource;

class MessageResource extends JsonResource
{
    public function toArray($request)
    {
        $model = $this;
        return [
            'id' => (int)$model->id,
            'message' => $model->message,
            'type' => $model->type,
            'resource' => $model->type == 2 ? $model->resource : null,
            'resource_type' => $model->resource_type,
            'resource_id' => $model->resource_id,
            'is_read' => $model->is_read,
            'created_at' => $model->created_at->format("Y-m-d H:i:s"),
        ];
    }
}