laravel - 如何在 Controller Laravel中编写自定义验证规则？

Question

我在 Controller Laravel中具有默认验证规则:

$validator = Validator::make($request->all(), [
            'email' => 'required|email',
            'phone' => 'required|numeric',
            'code' => 'required|string|min:3|max:4',
            'timezone' => 'required|numeric',
            'country' => 'required|integer',
            'agreement' => 'accepted'
        ]);

我试过了，但是不知道如何在函数内部传递一些参数:

 public function boot()
    {
        Validator::extend('phone_unique', function($attribute, $value, $parameters) {
            return substr($value, 0, 3) == '+44';
        });
    }

如何根据自己的规则扩展此验证？例如，我需要验证输入的隐含性:

$phone = $request->code.' '.$request->phone

检查数据库中是否存在 $phone后

我想使用这种方法:

>  $validator->sometimes('phone', 'required|alpha_dash|max:25', function
> ($input) {
>             if ((Auth::user()->phone == $input->phone)) {
>                 return false;
> 
>             } else {
> 
>                 $t = User::where("phone", $input->phone)->get();
>                 return ($t->count() > 0) ? false : false;
> 
>             }
>         });

并非在 (True, False)的所有条件下都可以使用。

我添加了新的验证 nickname_unique:

 $validator = Validator::make($request->all(), [
            'email' => 'required|email',
            'code' => 'required|string|min:3|max:4',
            'phone' => 'required|phone_unique',
            'timezone' => 'required|numeric',
            'country' => 'required|integer',
            'nickname' => 'required|alpha_dash|max:25',
            'agreement' => 'accepted'
        ], [
            'phone_unique' => 'Phone already exists!',
            'nickname_unique' => 'Nickname is busy!',
        ]);

它不起作用，甚至不能在previos下面调用验证规则:

Validator::extend('nickname_unique', function ($attribute, $value, $parameters, $validator) {

            dd("Here");

});

Answer 1

您可以在AppServiceProvider中定义您的自定义验证器，如下所示:

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Validator;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        Validator::extend('phone_unique', function ($attribute, $value, $parameters, $validator) {
          $inputs = $validator->getData();
          $code = $inputs['code'];
          $phone = $inputs['phone'];
          $concatenated_number = $code . ' ' . $phone;
          $except_id = (!empty($parameters)) ? head($parameters) : null;

          $query = User::where('phone', $concatenated_number);
          if(!empty($except_id)) {
            $query->where('id', '<>', $except);
          }

          return $query->exists();
      });

    /**
     * Register the service provider.
     *
     * @return void
     */
    public function register()
    {
        //
    }
}

You can get all the inputs passed to the validator, by accessing $validator property - getData()

您可以在自定义验证规则之后(仅在 colon之后)向规则数组添加一个额外的参数，如下所示:

'phone' => 'required|phone_unique:1',

Pass the id to be ignored while checking entries into the db

定制验证程序Closure接收四个参数:要验证的 $attribute的名称，属性的 $value，传递给规则的 $parameters数组以及Validator实例。

现在，您可以像这样调用验证器:

$validator = Validator::make($request->all(), [
      'email' => 'required|email',
      'code' => 'required|string|min:3|max:4',
      'phone' => 'required|phone_unique:1',
      'timezone' => 'required|numeric',
      'country' => 'required|integer',
      'agreement' => 'accepted'
  ], [
    'phone_unique' => 'Phone already exists!', // <---- pass a message for your custom validator
  ]);

查看有关 Custom Validation Rules的更多信息。