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当应用于数组（或可遍历对象）时，此约束允许你将一组约束应用于数组的每个元素。

适用于	属性或方法
类	全部
验证器	AllValidator

基本用法

假设你有一个字符串数组，并且你想验证该数组中的每个条目

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        // src/Entity/User.php
namespace App\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class User
{
    #[Assert\All([
        new Assert\NotBlank,
        new Assert\Length(min: 5),
    ])]
    protected array $favoriteColors = [];
}
    

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        # config/validator/validation.yaml
App\Entity\User:
    properties:
        favoriteColors:
            - All:
                - NotBlank:  ~
                - Length:
                    min: 5
    

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        <!-- config/validator/validation.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<constraint-mapping xmlns="http://symfony.ac.cn/schema/dic/constraint-mapping"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.ac.cn/schema/dic/constraint-mapping http://symfony.ac.cn/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">

    <class name="App\Entity\User">
        <property name="favoriteColors">
            <constraint name="All">
                <option name="constraints">
                    <constraint name="NotBlank"/>
                    <constraint name="Length">
                        <option name="min">5</option>
                    </constraint>
                </option>
            </constraint>
        </property>
    </class>
</constraint-mapping>
    

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        // src/Entity/User.php
namespace App\Entity;

use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\Validator\Mapping\ClassMetadata;

class User
{
    public static function loadValidatorMetadata(ClassMetadata $metadata): void
    {
        $metadata->addPropertyConstraint('favoriteColors', new Assert\All([
            'constraints' => [
                new Assert\NotBlank(),
                new Assert\Length(['min' => 5]),
            ],
        ]));
    }
}
    