Laravel:JSON 响应中日期的意外行为

Question

我正在 Laravel 中创建一个返回 JSON 的 Web 服务。

我创建了一个 Account模型如下:

class Account extends Eloquent {

    // The database table used by the model.
    // (If not defined then lowercase and plural of class name is consider as a table name)
    protected $table = "account";

     // define which column can be mass assign
    protected $fillable = array("user_id", "account_group_id", "generated_by", "image", "name", 
                                "address", "zip", "area_id", "mobile", "email", "phone", "fax",
                                "website", "pan", "cst", "tin", "ecc", "iesc", "transport", 
                                "other", "outstanding", "cform", "status", "mitp");

    // To prevent column from mass assignment.
    protected $guarded = array('id');

    // Change Variable for CREATED_AT and UPDATED_AT
    const CREATED_AT = 'itp';
    const UPDATED_AT = 'utp';
}

我正在从 Account 获取字段使用 user_id并通过 Response::json() 返回 JSON在我的 Controller 中

$accountData = Account::select('name', 'status', 'id', 'user_id', 'utp')->where('user_id', Auth::id())->first();
$return = array(
                'result' => 'success',
                'msg' => 'Login Successfully.',
                'data' => $accountData
               );
return Response::json($return);

在此， utp行为符合预期并以字符串形式返回日期:

{
  "result": "success",
  "msg": "Login Successfully.",
  "data": {
    "name": "Demo",
    "status": 0,
    "id": 143,
    "user_id": 207,
    "utp": "2015-07-01 18:38:01"
  }
}

但是，如果我像这样将每个值与帐户模型分开:

$return = array(
    'result' => 'success',
    'msg' => 'Login Successfully.',
    'data' => $accountData['user_id'],
    'account_id' => $accountData['id'],
    'utp' => $accountData['utp'],
    'usertype' => 'account',
    'status' => $accountData['status']
);

然后这给出了来自 utp 的一些意外行为。

{
  "result": "success",
  "msg": "Login Successfully.",
  "data": 207,
  "account_id": 143,
  "utp": {
    "date": "2015-07-01 18:38:01",
    "timezone_type": 3,
    "timezone": "Asia\\/Kolkata"
  },
  "usertype": "account",
  "status": 0
}

为什么我的时间戳字段会发生这种情况？

Answer 1

因为 utp是 Carbon\Carbon 实例。 Model::toJson (实际上 Model::toArray ，但两者都使用)通常处理，并将日期序列化为通常的 ISO3601 格式

对于预期的行为，您需要格式化 Carbon 实例。

"utp" => $accountData['utp']->format("Y-m-d H:i:s"),

或者，将其转换为字符串

"utp" => (string) $accountData['utp'],