weixin/app/Repositories/Transformers/Wechat/AccountTransformer.php

<?php

namespace App\Repositories\Transformers\Wechat;

use App\Repositories\Models\Wechat\Account;
use League\Fractal\TransformerAbstract;

class AccountTransformer extends TransformerAbstract
{
   /**
    * Prepare data to present.
    *
    * @param Account $account
    * @return array
    */
    public function transform(Account $account)
    {
        if (request()->has('id')) {
             return [
                 'id' => $account->id,
                 'created_at' => $account->created_at ? $account->created_at->format('Y-m-d H:i:s') : null,
             ];
        }
        return [
            'id' => $account->id,
            'created_at' => $account->created_at ? $account->created_at->format('Y-m-d H:i:s') : null,
        ];
    }
}