Laravel 5.5 FormRequest 自定义错误消息

　　使用FormRequest进行表单验证，就不用让验证逻辑和控制器里面的逻辑都混在一起。但在使用的时候呢，发现json错误返回的数据，与我们想要的有点差距。下面我给个例子：（不喜勿喷）

　　在用ajax进行提交时，如果验证错了，那么他会返回

　　如果是权限错了，他会返回

　　但我想要的是

　　那怎么办呢，其实很简单

　　我们只需要在　App\Exceptions\Handler 里面重写两个函数就可以了

　　添加上这两个函数，然后里面怎么定义，就看你了

　　记得加上

       use Illuminate\Validation\ValidationException;
       use Illuminate\Auth\Access\AuthorizationException;

最后附上这两个文件的代码

LoginPost

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Auth\AuthenticationException;

class LoginPost extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize(){
        if($this->input(‘account‘)==‘[email protected]‘){
            return false;
        }
        return true;
    }

    protected function failedAuthorization()
    {
        throw new AuthenticationException(‘该帐号已被拉黑‘);
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules(){
        return [
            ‘account‘=>[
                ‘required‘,
                ‘regex:/^1[34578][0-9]\d{4,8}|(\w)+(\.\w+)*@(\w)+((\.\w+)+)|[0-9a-zA-Z_]+$/‘,//验证为手机号，邮箱，或帐号
            ],
            ‘password‘=>‘required|between:6,18‘,//验证密码
        ];
    }

    public function messages(){
        return [
            ‘account.required‘ => ‘帐号不能为空‘,
            ‘account.regex‘ => ‘帐号不合法‘,
            ‘password.required‘  => ‘密码不能为空‘,
            ‘password.between‘  => ‘密码错误‘,
        ];
    }

Handler

<?php

namespace App\Exceptions;

use Exception;
use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
use Illuminate\Validation\ValidationException;
use Illuminate\Auth\AuthenticationException;

class Handler extends ExceptionHandler
{
    /**
     * A list of the exception types that are not reported.
     *
     * @var array
     */
    protected $dontReport = [
        //
    ];

    /**
     * A list of the inputs that are never flashed for validation exceptions.
     *
     * @var array
     */
    protected $dontFlash = [
        ‘password‘,
        ‘password_confirmation‘,
    ];

    /**
     * Report or log an exception.
     *
     * This is a great spot to send exceptions to Sentry, Bugsnag, etc.
     *
     * @param  \Exception  $exception
     * @return void
     */
    public function report(Exception $exception)
    {
        parent::report($exception);
    }

    /**
     * Render an exception into an HTTP response.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Exception  $exception
     * @return \Illuminate\Http\Response
     */
    public function render($request, Exception $exception)
    {
        return parent::render($request, $exception);
    }

    protected function unauthenticated($request, AuthenticationException $exception)
    {

        if($request->expectsJson()){
            $response=response()->json([
                    ‘status‘=>3,
                    ‘msg‘ => $exception->getMessage(),
                    ‘errors‘=>[],
                ], 200);
        }else{
            $response=redirect()->guest(route(‘login‘));
        }
        return $response;
    }

    protected function invalidJson($request, ValidationException $exception)
    {
        return response()->json([
            ‘status‘=>2,
            ‘msg‘ => $exception->getMessage(),
            ‘errors‘ => $exception->errors(),
        ], $exception->status);
    }
}

--------------------- 本文来自 断水流灬 的CSDN 博客 ，全文地址请点击：https://blog.csdn.net/duanshuiliu2017/article/details/78343408?utm_source=copy

原文地址：https://www.cnblogs.com/caicaizi/p/9728564.html