扩展/覆盖 Laravel 验证器类
Posted
技术标签:
【中文标题】扩展/覆盖 Laravel 验证器类【英文标题】:Extending/Overriding Laravel Validator Class 【发布时间】:2021-06-07 05:13:01 【问题描述】:在 Laravel 8.3 中,他们引入了一个新功能,stopOnFirstFailure,一旦规则失败,它就会完全停止验证。我想在 Laravel 7 中使用此功能。在检查 Laravel 8 的 vendor/laravel/framework/src/Validation/Validator.php 时,我发现 stopOnFirstFailure 只是在 Validator.php的 passes 函数中添加一个 if 语句> 如果受保护的变量 stopOnFirstFailure 为真,则会中断验证循环。是否可以通过扩展/覆盖 Validator.php 类在 Laravel 7 中实现这些?我一直在研究扩展核心 Laravel 类并偶然发现了这个 article 但这有点令人困惑,因为这篇文章只展示了如何覆盖特定的函数。在我的情况下,我需要声明一个受保护的变量,覆盖一个函数并声明一个新函数。
Laravel 8 Validator.php 代码: 声明变量:
/**
* Indicates if the validator should stop on the first rule failure.
*
* @var bool
*/
protected $stopOnFirstFailure = false;
stopOnFirstFailure功能:
/**
* Instruct the validator to stop validating after the first rule failure.
*
* @param bool $stopOnFirstFailure
* @return $this
*/
public function stopOnFirstFailure($stopOnFirstFailure = true)
$this->stopOnFirstFailure = $stopOnFirstFailure;
return $this;
通过功能:
/**
* Determine if the data passes the validation rules.
*
* @return bool
*/
public function passes()
$this->messages = new MessageBag;
[$this->distinctValues, $this->failedRules] = [[], []];
// We'll spin through each rule, validating the attributes attached to that
// rule. Any error messages will be added to the containers with each of
// the other error messages, returning true if we don't have messages.
foreach ($this->rules as $attribute => $rules)
if ($this->shouldBeExcluded($attribute))
$this->removeAttribute($attribute);
continue;
if ($this->stopOnFirstFailure && $this->messages->isNotEmpty())
break;
foreach ($rules as $rule)
$this->validateAttribute($attribute, $rule);
if ($this->shouldBeExcluded($attribute))
$this->removeAttribute($attribute);
break;
if ($this->shouldStopValidating($attribute))
break;
编辑:表单请求在我的代码中使用了验证器。 我的代码示例:
class UpdateRegistrationTagsRequest extends FormRequest
protected $stopOnFirstFailure = true;
/**
* Determine if the user is authorized to make this request.
*
* @return bool
*/
public function authorize()
return true;
/**
* Get the validation rules that apply to the request.
*
* @return array
*/
public function rules()
return [
'product_id' => ['required'],
'product.*.type' => ['required','distinct'],
'product.*.value' => ['required'],
'product' => ['bail', 'required', 'array', new CheckIfArrayOfObj, new CheckIfProductTypeExists($this->product_id)]
];
protected function failedValidation(\Illuminate\Contracts\Validation\Validator $validator)
$response = new JsonResponse(['api' => [
'header' => [
'message' => 'The given data is invalid',
'errors' => $validator->errors()->first()
],
'body' => ''
]], 422);
throw new \Illuminate\Validation\ValidationException($validator, $response);
编辑:遵循@thefallen 的建议,这就是我所做的。 我的 CustomValidator.php 类在 app 目录内的 CustomClass 中:
<?php
namespace App\CustomClass;
use Illuminate\Validation\Validator;
use Illuminate\Support\MessageBag;
class CustomValidator extends Validator
/**
* Indicates if the validator should stop on the first rule failure.
*
* @var bool
*/
protected $stopOnFirstFailure = true;
/**
* Instruct the validator to stop validating after the first rule failure.
*
* @param bool $stopOnFirstFailure
* @return $this
*/
public function stopOnFirstFailure($stopOnFirstFailure = true)
$this->stopOnFirstFailure = $stopOnFirstFailure;
return $this;
/**
* Determine if the data passes the validation rules.
*
* @return bool
*/
public function passes()
$this->messages = new MessageBag;
[$this->distinctValues, $this->failedRules] = [[], []];
// We'll spin through each rule, validating the attributes attached to that
// rule. Any error messages will be added to the containers with each of
// the other error messages, returning true if we don't have messages.
foreach ($this->rules as $attribute => $rules)
if ($this->shouldBeExcluded($attribute))
$this->removeAttribute($attribute);
continue;
if ($this->stopOnFirstFailure && $this->messages->isNotEmpty())
break;
foreach ($rules as $rule)
$this->validateAttribute($attribute, $rule);
if ($this->shouldBeExcluded($attribute))
$this->removeAttribute($attribute);
break;
if ($this->shouldStopValidating($attribute))
break;
return parent::passes();
CustomClass 文件夹中的我的 ValidatorFactory
<?php
namespace App\CustomClass;
use Illuminate\Validation\Factory;
use App\CustomClass\CustomValidator;
class ValidatorFactory extends Factory
protected function resolve( array $data, array $rules, array $messages, array $customAttributes )
if (is_null($this->resolver))
return new CustomValidator($this->translator, $data, $rules, $messages, $customAttributes);
return call_user_func($this->resolver, $this->translator, $data, $rules, $messages, $customAttributes);
我的 AppServiceProvider:
<?php
namespace App\Providers;
use Illuminate\Support\ServiceProvider;
use App\CustomClass\ValidatorFactory;
class AppServiceProvider extends ServiceProvider
/**
* Register any application services.
*
* @return void
*/
public function register()
$this->app->extend('validator', function ()
return $this->app->get(ValidatorFactory::class);
);
/**
* Bootstrap any application services.
*
* @return void
*/
public function boot()
//
【问题讨论】:
你能添加代码你目前如何使用验证器吗?你有 Request 类还是手动调用它? @thefallen 嗨,添加了我的代码。谢谢。Would it be possible to implement these in Laravel 7 by extending/overiding the Validator.php class?
是的,我想这是你的问题
【参考方案1】:
您基本上需要扩展 Validator 以对该方法进行更改,然后创建自己的 Validation Factory 来创建这个新的 Validator 而不是默认的。所以第一步是使用你自己的验证器:
use Illuminate\Validation\Validator;
class CustomValidator extends Validator
public function passes()
//TODO make changes on that loop
return parent::passes();
然后你需要一个验证工厂来创建这个新类,这也将扩展默认类:
use Illuminate\Validation\Factory;
class ValidatorFactory extends Factory
protected function resolve( array $data, array $rules, array $messages, array $customAttributes )
if (is_null($this->resolver))
return new CustomValidator($this->translator, $data, $rules, $messages, $customAttributes);
return call_user_func($this->resolver, $this->translator, $data, $rules, $messages, $customAttributes);
最后,在register()
方法中的app/Providers/AppServiceProvider.php
中,您需要将默认工厂替换为自定义工厂:
$this->app->extend('validator', function ()
return $this->app->get(ValidatorFactory::class);
);
注意validator
是Illuminate\Validation\Factory
的绑定(或别名)的名称。你应该很高兴能够对验证器进行任何更改。
【讨论】:
感谢您的回复@thefallen。我尝试了你的建议,我在我的应用程序目录中创建了一个名为 CustomClass 的文件夹,然后创建了两个类 CustomValidator.php 和 ValidatorFactory.php。我在 CustomValidator.php 中复制了 Laravel 8 代码,并为 ValidatorFactory 复制了您的代码,并在 AppServiceProvider 中注册了工厂,但它似乎不起作用,但我没有收到任何错误。 @cjdy13,这很奇怪,因为如果您按照步骤操作,这应该适用于表单请求和手动验证。无论如何,我不想建议的另一个解决方案是在您的表单请求类中有一个validator()
方法,您可以从那里返回您的类app(CustomValidator::class)
。缺点是只会为此表单请求调用。
让我更新我的帖子,这样我就可以向你展示我所做的一切。
我用当前代码更新了我的帖子。谢谢!
嗨@thefallen,我的错,我复制的passes函数不完整,我只是复制了丢失的代码,现在它可以工作了!非常感谢您的帮助! :)【参考方案2】:
可能有点晚了,但我在 Laravel 6 上遇到了同样的问题。 不想扩展/覆盖验证器的当前正常行为。 所以我这样做了
public function validateResolved()
if (!$this->authorize())
$this->failedAuthorization();
foreach ($this->rules() as $key=>$val)
$validator = app('validator')->make(
request()->all(),
[$key=>$val],
$this->messages()
);
if ($validator->fails())
throw \Illuminate\Validation\ValidationException::withMessages($validator->errors()->messages());
【讨论】:
以上是关于扩展/覆盖 Laravel 验证器类的主要内容,如果未能解决你的问题,请参考以下文章