laravel自定義驗證

一、在控制器中直接寫驗證
$this->validate($request, [
 'video_ids' => [
 function($attribute, $value, $fail) {
 $ids = explode(',', $value);
 foreach ($ids as $id) {
 if ($id > 2147483647) {
 $fail(':id max is 2147483647!');
 }
 }
 }
 ]
]);

二、全局自定義方法
在 app/Providers/AppServiceProvider.php

use App\Validations\CustomValidation;

public function boot()
{
 new CustomValidation();
}

三、在/resources/lang/en/validation.php定義返回錯誤提示
return [
 'max_id' => 'max id is 2147483647'
];

四、在app/Validation／CustomValidation.php

<?php
/**
 * Created by PhpStorm.
 * User: ganga
 * Date: 2019/3/7
 * Time: 下午8:00
 */

namespace App\Validations;

use Illuminate\Support\Facades\Validator;

class CustomValidation
{
 public function __construct()
 {
 $this->maxId();
 }

 public function maxId()
 {
 Validator::extend('max_id', function ($attribute, $value, $parameters, $validator) {
 $ids = explode(',', $value);
 foreach ($ids as $id) {
 if ($id > 2147483647) {
 return false;
 }
 }
 return true;
 });
 }
}

5\rules中能夠寫入

'video_ids' => 'string|nullable|max_id',

https://upeng.github.io/blog/2017/10/18/laravel-validator/