Laravel自定义验证方法

<?php

namespace App\Validators;

use Illuminate\Validation\Validator;

class CustomValidator extends Validator
{
    public function validateCustomRule($attribute, $value, $parameters)
    {
        // 自定义验证规则的逻辑
        // 如果验证失败，可以通过$this->addError方法添加错误消息
        if ($value !== 'custom') {
            $this->addError($attribute, 'The :attribute must be custom.');
            return false;
        }
        return true;
    }
}

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use App\Validators\CustomValidator;

class AppServiceProvider extends ServiceProvider
{
    public function boot()
    {
        $this->app['validator']->extend('custom_rule', function ($attribute, $value, $parameters, $validator) {
            return (new CustomValidator($validator->translator, $validator->data, $validator->rules, $validator->messages))->validateCustomRule($attribute, $value, $parameters);
        });
    }
}

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class UserController extends Controller
{
    public function store(Request $request)
    {
        $validatedData = $request->validate([
            'name' => 'required',
            'email' => 'required|email|unique:users',
            'custom_field' => 'custom_rule',
        ]);
        
        // 其他逻辑
    }
}