在 Laravel 8.3中，他们引入了一个新特性 stopOnFirstFailure，一旦有规则失败，它就会完全停止验证。我想在 Laravel 7中使用这个特性。在检查Laravel 8的 vendor/laravel/framework/src/Validation/Validator.php 后，我发现 stopOnFirstFailure 只是在 Validator.php 的 passes 函数中添加了一个 if 语句，如果受保护变量 stopOnFirstFailure 为 true，则会中断验证循环。通过扩展/覆盖 Validator.php 类，是否可以在 Laravel 7中实现这些呢？我一直在研究如何扩展核心 Laravel 类，并偶然发现了这篇文章，但它有点令人困惑，因为文章只展示了如何覆盖特定功能。在我的情况下，我需要声明一个受保护的变量，重写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 function:
/**
* 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;
}
passes 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：我的代码中使用了表单请求的验证器。 示例代码：
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，这是我的操作步骤。 我的 CustomValidator.php 类在 app 目录下的 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();
}
}
我的ValidatorFactory位于CustomClass文件夹内
<?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()
{
//
}
}