如何解决扩展/覆盖 Laravel 验证器类
在 Laravel 8.3 中，他们引入了一个新功能，stopOnFirstFailure，一旦规则失败，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 后，我发现 stopOnFirstFailure 只需在 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函数。就我而言，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 函数：
/**
* 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;
}
传递函数：
/**
* 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。 我在应用目录中的 CustomClass 中的 CustomValidator.php 类：
<?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,$rule);
if ($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,$this->translator,$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()
{
//
}
}
解决方法
您基本上需要扩展验证器以对该方法进行更改，然后创建您自己的验证工厂来创建这个新验证器而不是默认验证器。因此，第一步是使用您自己的验证器：
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，这也将扩展默认的：
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,$this->translator,$customAttributes);
}
}
最后在 app/Providers/AppServiceProvider.php 方法中的 register() 中，您需要将默认工厂与自定义工厂交换：
$this->app->extend('validator',function () {
return $this->app->get(ValidatorFactory::class);
});
请注意，validator 是 Illuminate\Validation\Factory 的绑定名称（或别名）。您应该很高兴能够对验证器进行任何更改。
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
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