DivisibleBy

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验证一个值是否可以被另一个值整除，该值在选项中定义。

参见

如果您需要验证集合中元素的数量可以被某个数字整除，请使用 Count 约束和 divisibleBy 选项。

适用于	属性或方法
类	DivisibleBy
验证器	DivisibleByValidator

基本用法

以下约束确保

Item 的 weight 以 0.25 的增量提供
Item 的 quantity 必须可以被 5 整除

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

use Symfony\Component\Validator\Constraints as Assert;

class Item
{
    #[Assert\DivisibleBy(0.25)]
    protected float $weight;

    #[Assert\DivisibleBy(
        value: 5,
    )]
    protected int $quantity;
}
    

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        # config/validator/validation.yaml
App\Entity\Item:
    properties:
        weight:
            - DivisibleBy: 0.25
        quantity:
            - DivisibleBy:
                value: 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\Item">
        <property name="weight">
            <constraint name="DivisibleBy">
                <value>0.25</value>
            </constraint>
        </property>
        <property name="quantity">
            <constraint name="DivisibleBy">
                <option name="value">5</option>
            </constraint>
        </property>
    </class>
</constraint-mapping>
    

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

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

class Item
{
    // ...

    public static function loadValidatorMetadata(ClassMetadata $metadata): void
    {
        $metadata->addPropertyConstraint('weight', new Assert\DivisibleBy(0.25));

        $metadata->addPropertyConstraint('quantity', new Assert\DivisibleBy([
            'value' => 5,
        ]));
    }
}
    