laravel/lumen模型维护时间戳，查询转换datetime

[JesseyChen]

use Carbon\Carbon;
use Illuminate\Database\Eloquent\Model;

class User extends Model
{

    protected $dateFormat = 'U';   # 模型自动维护时间戳格式

    protected $hidden = ['password', 'pay_password', 'salt'];

    public function getCreatedAtAttribute($value)   # 查询自动转化日期
    {
        return Carbon::createFromTimestamp($value)->toDateTimeString();
    }

    public function getUpdatedAtAttribute($value)
    {
        return Carbon::createFromTimestamp($value)->toDateTimeString();
    }
}