Laravel validation with custom json respons - json

Question

Quick question.
Would it be possible to changes the JSON validation response of laravel?
This is for a custom API that I am building in Laravel.
Validation process
$validation = $this->validate(
$request, [
'user_id' => 'required',
]);
The response shows up like this in json
{
"message": "The given data was invalid.",
"errors": {
"user_id": [
"The user id field is required."
],
}
}
Preferable it would become something like this.
{
"common:" [
"status": "invalid",
"message": "Param xxxx is required",
],
}
What would be the best way to changes this?
Is it even possible?
Thank you.

Answer 1

You can do this, and it will be reflected globally.
Navigate to below folder and use Controller.php
app/Http/Controllers
use Illuminate\Http\Request;
Write below method in Controller.php and change response as you want.
public function validate(
Request $request,
array $rules,
array $messages = [],
array $customAttributes = [])
{
$validator = $this->getValidationFactory()
->make(
$request->all(),
$rules, $messages,
$customAttributes
);
if ($validator->fails()) {
$errors = (new \Illuminate\Validation\ValidationException($validator))->errors();
throw new \Illuminate\Http\Exceptions\HttpResponseException(response()->json(
[
'status' => false,
'message' => "Some fields are missing!",
'error_code' => 1,
'errors' => $errors
], \Illuminate\Http\JsonResponse::HTTP_UNPROCESSABLE_ENTITY));
}
}
I have tried it with Laravel 5.6, maybe this is useful for you.

Answer 2

#Dev Ramesh solution is still perfectly valid for placing inline within your controller.
For those of you looking to abstract this logic out into a FormRequest, FormRequest has a handy override method called failedValidation. When this is hit, you can throw your own response exception, like so...
/**
* When we fail validation, override our default error.
*
* #param ValidatorContract $validator
*/
protected function failedValidation(\Illuminate\Contracts\Validation\Validator $validator)
{
$errors = $this->validator->errors();
throw new \Illuminate\Http\Exceptions\HttpResponseException(
response()->json([
'errors' => $errors,
'message' => 'The given data was invalid.',
'testing' => 'Whatever custom data you want here...',
], 422)
);
}

Answer 3

I was searching for an answer to this and I think I found a better way. There is an exception handler in a default Laravel app - \App\Exceptions\Handler - and you can override the invalidJson method:
<?php
namespace App\Exceptions;
use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
use Illuminate\Validation\ValidationException;
class Handler extends ExceptionHandler
{
// ...
protected function invalidJson($request, ValidationException $exception)
{
$errors = [];
foreach ($exception->errors() as $field => $messages) {
foreach ($messages as $message) {
$errors[] = [
'code' => $field,
'message' => $message,
];
}
}
return response()->json([
'error' => $errors,
], $exception->status);
}
}