所以我正在尝试为内部项目开发一个rest API，我遇到了一个问题，当表单请求验证失败时，会显示@index响应。
所以我有两条路线;
Route::get('/api/clients', 'ClientController@index');
Route::post('/api/clients', 'ClientController@store');
@index列出所有客户端，@store创建一个新客户端，我在@store方法上有一个表单请求验证器，用于检查为客户端提供的名称。
我想要的是当验证器失败时，它会显示带有验证错误的JSON响应。但我认为它发生的是验证失败，因此重定向回到同一页面，但重定向是GET而不是POST，因此它会列出所有客户端。
我知道您可以设置标头，使其看起来像ajax请求，它会正确显示JSON响应，但我希望它显示JSON响应，无论它是否为ajax。
我已经尝试覆盖我的验证器中的response方法，该方法不起作用，我已经尝试在验证器中设置wantsJson方法返回true，这再次无效。< / p>
非常感谢帮助。
代码低于......
web.php
Route::get('/api/clients', 'ClientController@index');
Route::get('/api/clients/{client}', 'ClientController@show');
Route::post('/api/clients', 'ClientController@store');
Route::put('/api/clients/{id}', 'ClientController@update');
Route::delete('/api/clients/{id}', 'ClientController@delete');
ClientController.php
namespace App\Http\Controllers;
use App\Client;
use App\Http\Requests\ClientRequest;
class ClientController extends Controller
{
/**
* Store a newly created resource in storage.
*
* @param \Illuminate\Http\Request $request
* @return \Illuminate\Http\Response
*/
public function store(ClientRequest $request)
{
return Client::create([
'title' => request('title'),
'user_id' => auth()->id()
]);
}
ClientRequest.php
<?php
namespace App\Http\Requests;
use Illuminate\Foundation\Http\FormRequest;
class ClientRequest extends FormRequest
{
/**
* Determine if the user is authorized to make this request.
*
* @return bool
*/
public function authorize()
{
return true;
}
/**
* Get the validation rules that apply to the request.
*
* @return array
*/
public function rules()
{
return [
'title' => 'required'
];
}
/**
* Get the failed validation response for the request.
*
* @param array $errors
* @return JsonResponse
*/
public function response(array $errors)
{
dd('exit'); // Doesn't work
}
}
答案 0 :(得分：18)
您可以尝试这样
在表单请求中首先使用如下所示
use Illuminate\Contracts\Validation\Validator;
use Illuminate\Http\Exceptions\HttpResponseException;
然后
protected function failedValidation(Validator $validator) {
throw new HttpResponseException(response()->json($validator->errors(), 422));
}
现在，如果您尝试验证，那么它将返回
{
"title": [
"The title field is required."
]
}
答案 1 :(得分：7)
试试这个
打开app / Exceptions / Handler.php文件
包括使用
use Illuminate\Validation\ValidationException;
然后添加方法
/**
* Create a response object from the given validation exception.
*
* @param \Illuminate\Validation\ValidationException $e
* @param \Illuminate\Http\Request $request
* @return \Symfony\Component\HttpFoundation\Response
*/
protected function convertValidationExceptionToResponse(ValidationException $e, $request)
{
if ($e->response) {
return $e->response;
}
return response()->json($e->validator->errors()->getMessages(), 422);
}
现在您可以像ajax请求一样获得标准的validationFailure响应
答案 2 :(得分：7)
发出请求时，我们应该发送标题信息。
Accept: application/json
Content-Type: application/json
就是这样，现在laravel不会重定向并以JSON格式发送错误消息。
答案 3 :(得分：2)
我制作了一个中间件（仅适用于API请求），以使Accept头默认包含application / json：
/**
* Ensures the default Accept header is application/json
*/
class DefaultApiAcceptJson
{
public function handle(Request $request, \Closure $next)
{
$acceptHeader = $request->headers->get('Accept');
if (!Str::contains($acceptHeader, 'application/json')) {
$newAcceptHeader = 'application/json';
if ($acceptHeader) {
$newAcceptHeader .= "/$acceptHeader";
}
$request->headers->set('Accept', $newAcceptHeader);
}
return $next($request);
}
}
这样，我总是得到验证错误JSON响应，而不是重定向到Web索引页面。
答案 4 :(得分：0)
我刚刚创建了一个ApiFormRequest，它会覆盖FormRequest::failedValidation这样的方法：
<?php
// app/Http/Requests/ApiFormRequest.php
namespace App\Http\Requests;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Http\Exceptions\HttpResponseException;
use Illuminate\Contracts\Validation\Validator;
class ApiFormRequest extends FormRequest
{
protected function failedValidation(Validator $validator): void
{
$jsonResponse = response()->json(['errors' => $validator->errors()], 422);
throw new HttpResponseException($jsonResponse);
}
}
然后您只需像这样使用
<?php
namespace App\Http\Requests;
use Illuminate\Foundation\Http\FormRequest;
class ClientRequest extends ApiFormRequest
{
// ...
答案 5 :(得分：0)
有一种方法可以在验证失败（在控制器中）时简单地返回错误。 示例：
try {
request()->validate([
'input1' => 'required',
'input2' => 'string|min:5',
]);
} catch (\Illuminate\Validation\ValidationException $e){
return response('The given data was invalid.', 403);
}
方便干净
答案 6 :(得分：0)
只需使用此特征即可防止FormRequest验证后重定向。
以下特征还带来了一些有用的公共方法，例如：
validatorPasses() validatorFails() validatorErrors() respondWithErrorsJson(int $code = 422) redirectWithErrors()-恢复默认的Laravel FomrRequest行为namespace App\Http\Requests;
use Illuminate\Contracts\Validation\Validator;
use Illuminate\Http\Exceptions\HttpResponseException;
use Illuminate\Support\MessageBag;
use Illuminate\Validation\ValidationException;
trait PreventsRedirectWhenFailedTrait
{
/**
* Default self::failedValidation() Laravel behavior flag.
*
* @var bool
*/
private $defaultFailedValidationRestored = false;
/**
* Check for validator success flag.
*
* @return bool
*/
public function validatorPasses(): bool
{
return !$this->validatorFails();
}
/**
* Check for validator fail flag.
*
* @return bool
*/
public function validatorFails(): bool
{
return $this->getValidatorInstance()->fails();
}
/**
* @return MessageBag
*/
public function validatorErrors(): MessageBag
{
return $this->getValidatorInstance()->errors();
}
/**
* Respond with validator errors in JSON format.
*
* @param int $code
*/
public function respondWithErrorsJson(int $code = 422): void
{
if ($this->validatorFails()) {
throw new HttpResponseException(
response()->json(['errors' => $this->getValidatorInstance()->errors()], $code)
);
}
}
/**
* Restore and apply default self::failedValidation() method behavior.
*
* @throws ValidationException
*/
public function redirectWithErrors(): void
{
$this->defaultFailedValidationRestored = true;
$this->failedValidation($this->getValidatorInstance());
}
/**
* Handle a failed validation attempt.
*
* @param \Illuminate\Contracts\Validation\Validator $validator
* @return void
*
* @throws \Illuminate\Validation\ValidationException
*/
protected function failedValidation(Validator $validator): void
{
if ($this->defaultFailedValidationRestored) {
throw (new ValidationException($validator))
->errorBag($this->errorBag)
->redirectTo($this->getRedirectUrl());
}
}
}
namespace App\Http\Requests;
use Auth;
use Illuminate\Foundation\Http\FormRequest;
class AuthRequest extends FormRequest
{
use PreventsRedirectWhenFailedTrait;
/**
* Determine if the user is authorized to make this request.
*
* @return bool
*/
public function authorize(): bool
{
return Auth::guest();
}
/**
* Get the validation rules that apply to the request.
*
* @return array
*/
public function rules(): array
{
return [
'email' => 'required|email|exists:users',
'password' => 'required',
'remember_me' => 'integer',
];
}
}
public function authenticate(AuthRequest $request)
{
if ($request->validatorPasses()) {
$data = $request->validated();
/* your logic */
} else {
$errorBag = $request->validatorErrors();
}
// or
if ($request->validatorFails()) {
// your logic
}
}
希望您会发现这很有帮助。