Laravel 5.3 更新方法不起作用

Question

我正在开发一个 API 我有一个资源控制器来 CRUD 驱动程序，在我的更新功能中我收到了这个错误

QueryException in Connection.php line 770:
SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'registration_center' cannot be null (SQL: update `drivers` set `registration_center` = , `registration_date` = 04-02-2017, `sponsor_name` = , `event_name` = , `registration_id` = 040217001, `profile_photo` = , `first_name` = , `last_name` = ,`updated_at` = 2017-02-04 04:54:54 where `id` = 3)

我在我的更新方法中做了dd($request);，我得到了所有的 JSON 响应

Request {#40
  #json: ParameterBag {#32
    #parameters: array:1 [
      "data" => array:61 [
        "id" => 3
        "agent_id" => "201705"
        "registration_center" => "dfgsdfgdfgdsdfgdf"
        "registration_date" => "03-02-2017"
        "sponsor_name" => "Sponser Name"
        "event_name" => "RC"
        "registration_id" => "FRTGHY030217001"
        "profile_photo" => ""","
        "first_name" => "Walter"
        "last_name" => "White"
        "created_at" => "2017-01-24 10:08:42"
        "updated_at" => "2017-02-03 11:33:52"
        "deleted_at" => null
      ]
    ]
  }

但是对于dd($request->registration_center);，我得到的是NULL

我的方法

public function update(Request $request, $id)
{
    $update_driver = Driver::find($id);

    $update_driver->registration_center = $request->registration_center;
    $update_driver->registration_date = $request->registration_date;
    $update_driver->sponsor_name = $request->sponsor_name;
    $update_driver->event_name = $request->event_name;
    $update_driver->registration_id = $request->registration_id;
    $update_driver->profile_photo = $request->profile_photo;
    $update_driver->first_name = $request->first_name;
    $update_driver->last_name = $request->last_name;                        
    $update_driver->save();

    return $this->respondUpdated('Driver updated successfully');
}

我的路线是

Route::group(['prefix' => 'v1', 'middleware' => 'auth:api'], function() {
    Route::get('user', 'UsersController@index');
    Route::resource('drivers', 'DriversController'); //drivers CRUD
});

期待获得急需的帮助

谢谢

Answer 1

从 Laravel 请求中访问 POST 数据的一般方法是使用 input 方法。

$field = $request->input('field');

看看你的例子，Request 对象中似乎有一个 data 字段，它是一个关联数组，registration_center 在里面。如果我猜对了，那么在你的情况下，你会使用：

$update_driver->registration_center = $request->input('data')['registration_center'];

// or, using Laravel's "dot"-syntax
$update_driver->registration_center = $request->input('data.registration_center');

访问数据。对于您尝试检索的所有其他值也是如此。

Answer 2

由于它是一个数组，因此您需要通过以下方式访问它：

$request['data']['registration_center'];