How to get validator errors in json?

Question

Laravel

How to get validator errors in json (Laravel, Ajax) ?

I tried this, but I get an error (code 500)

Fetch request

let data2 ;
let datasend ;
input_login.onblur = async () => {
  if(input_login.value != "")   {
    
    let checkLogin = input_login.value;
    let _token = $("input[name='_token']").val();
    
    let response = await fetch("/email-exist", {
        method: 'POST',
        headers:{"Content-Type":'application/json'},
        body:JSON.stringify({
            "_token":_token,
            "checkLogin":checkLogin
        })
    })
    	datasend = await response.json();

        console.log(datasend)
}}

route

Route::post('/email-exist', '[email protected]');

Controller

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use Illuminate\Validation\ValidationException;
use Illuminate\Support\Facades\Validator;

class ExistEmailController extends Controller
{
        public function CheckingLogin(Request $req) {
        $rules = [
        'checkLogin' => 'required|min:5|max:50'
        ];

        $validatedData = Validator::make($req->checkLogin, $rules);

        if($validatedData->fails()) {
        	return response()->json($validatedData->messages(), 200);
        }
    }
}

Answer 1

https://laravel.com/docs/7.x/validation#form-reque... Pay
attention to exception handling, if it exists, this option may not work:

public function authorize(): bool
    {
        return true;
    }
    public function rules(): array
    {
        return [
            'post'    => 'required|numeric|exists:blog_posts,id',
            'content' => 'required|min:2',
        ];
    }
    public function messages(): array
    {
        return [
            'post.required'    => 'Ошибка идентификации поста',
            'post.exists'      => 'Ошибка идентификации поста',
            'post.numeric'     => 'Ошибка идентификации поста',
            'content.required' => 'Текст комментария не может быть пустым',
            'content.min'      => 'Слишком короткий комментарий',
        ];
    }
    public function failedValidation(Validator $validator): void
    {
        $response = [];
        $errors = (new ValidationException($validator))->errors();
        foreach ($errors as $element) {
            foreach ($element as $message) {
                $response[] = $message;
            }
        }
        throw new HttpResponseException(
            response()->json($response, JsonResponse::HTTP_UNPROCESSABLE_ENTITY)
        );
    }