升级到 Laravel 7 后日期未投射 [英] Dates not casting after upgrading to Laravel 7

问题描述

我刚刚从 Laravel 6 (PHP 7.4) 升级到 Laravel 7 (PHP 7.4)，但模型中的日期转换完全停止工作.

I have just upgraded from Laravel 6 (PHP 7.4) to Laravel 7 (PHP 7.4) and casting dates in a model has completely stopped working.

例如，在我的 User 模型中，我有以下 $dates 数组:

For example, in my User model, I have the following $dates array:

protected $dates = [
    'online_at'
];

返回以下内容:2020-08-17T00:00:00.000000Z 但我希望返回一个 Carbon 对象.

The following is returned: 2020-08-17T00:00:00.000000Z yet I am expecting a Carbon object to be returned.

MySQL 数据库中的字段是 DATETIME.

The field in the MySQL database is DATETIME.

created_at、updated_at 和 deleted_at 字段也是如此.所有型号都相同.

The same is happening with the created_at, updated_at, and deleted_at fields. It's also the same across all models.

我尝试将字段移动到 $casts 数组中，但得到了相同的结果.

I have tried moving the field into the $casts array but I get the same result.

任何帮助将不胜感激.

推荐答案

Laravel 7 在 Eloquent 模型上使用 toArray 或 toJson 方法时使用新的日期序列化格式.

Laravel 7 uses a new date serialization format when using the toArray or toJson method on Eloquent models.

以前，日期会被序列化为如下格式:

Previously, dates would be serialized to a format like the following :

2019-12-02 20:01:00

使用 ISO-8601 格式序列化的日期将显示为:

Dates serialized using the ISO-8601 format will appear like :

2019-12-02T20:01:00.283041Z

请注意，ISO-8601 日期始终以 UTC 表示.

Please note that ISO-8601 dates are always expressed in UTC.

如果您想继续使用以前的行为，您可以覆盖模型上的 serializeDate() 方法:

If you would like to keep using the previous behavior you can override the serializeDate() method on your model :

use DateTimeInterface;

protected function serializeDate(DateTimeInterface $date)
{
    return $date->format('Y-m-d H:i:s');
}

查看官方升级文档这里

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