如何在Laravel 5.5中为选定的请求类设置自定义响应

Question

我试图使用Laravel验证来生成自定义错误消息，但是我无法找到我应该重写的函数。

路线：POST:/entries/使用EntryController@store其使用EntryStoreRequest来执行验证。

EntryStoreRequest

namespace App\Api\V1\Requests; 

class EntryStoreRequest extends ApiRequest 
{ 
    /** 
    * Get the validation rules that apply to the request. 
    * 
    * @return array 
    */ 
    public function rules() 
    { 
     return [ 
      'message' => [ 
       'string', 
       'required', 
       'max:65535', 
      ], 
      'code' => [ 
       'string', 
       'max:255', 
       'nullable' 
      ], 
      'file' => [ 
       'string', 
       'max:255', 
       'nullable' 
      ], 
      'line' => [ 
       'string', 
       'max:255', 
       'nullable' 
      ], 
      'stack' => [ 
       'string', 
       'max:65535', 
       'nullable' 
      ] 
     ]; 
    } 
} 

ApiRequest

namespace App\Api\V1\Requests; 

use Illuminate\Foundation\Http\FormRequest; 

abstract class ApiRequest extends FormRequest 
{ 
    /** 
    * Determine if the user is authorized to make this request. 
    * 
    * @return bool 
    */ 
    public function authorize() 
    { 
     return true; 
    } 
} 

的错误正在返回：

{ 
    "message": "The given data was invalid.", 
    "errors": { 
     "message": [ 
      "The message field is required." 
     ] 
    } 
} 

我想它们格式化为：

{ 
    "data": [], 
    "meta: { 
     "message": "The given data was invalid.", 
     "errors": { 
      "message": [ 
       "The message field is required." 
      ] 
     } 
} 

如何在ApiRequest类中实现此目的？

Answer 1

如果你想定制只对选定的Request类验证响应时，需要添加failedValidation()消息，这个类：

protected function failedValidation(\Illuminate\Contracts\Validation\Validator $validator) 
{ 
    $response = new JsonResponse(['data' => [], 
      'meta' => [ 
       'message' => 'The given data is invalid', 
       'errors' => $validator->errors() 
      ]], 422); 

    throw new \Illuminate\Validation\ValidationException($validator, $response); 
} 

这样你就不需要在处理程序改变任何东西，有这种风俗只对这个班级做出反应。

如果你想全局更改格式的所有响应您应该添加到app\Exceptions\Handler.php文件下面的方法：

protected function invalidJson($request, ValidationException $exception) 
{ 
    return response()->json([ 
      'data' => [], 
      'meta' => [ 
       'message' => 'The given data is invalid', 
       'errors' => $exception->errors() 
      ] 
      ], $exception->status); 
} 

可以在异常格式部分