字符集

编辑此页

7.1

Charset 约束在 Symfony 7.1 中引入。

验证字符串（或实现 Stringable PHP 接口的对象）是否以给定的字符集编码。

应用于	属性或方法
类	字符集
验证器	CharsetValidator

基本用法

如果您想确保 FileDTO 类的 content 属性使用 UTF-8 编码，您可以这样做

        1
2
3
4
5
6
7
8
9
10
        // src/Entity/FileDTO.php
namespace App\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class FileDTO
{
    #[Assert\Charset('UTF-8')]
    protected string $content;
}
    

        1
2
3
4
5
        # config/validator/validation.yaml
App\Entity\FileDTO:
    properties:
        content:
            - Charset: 'UTF-8'
    

        1
2
3
4
5
6
7
8
9
10
11
12
13
14
        <!-- config/validator/validation.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<constraint-mapping xmlns="https://symfony.ac.cn/schema/dic/constraint-mapping"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="https://symfony.ac.cn/schema/dic/constraint-mapping https://symfony.ac.cn/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">

    <class name="App\Entity\FileDTO">
        <property name="content">
            <constraint name="Charset">
                <option name="charset">UTF-8</option>
            </constraint>
        </property>
    </class>
</constraint-mapping>
    

        1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
        // src/Entity/FileDTO.php
namespace App\Entity;

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

class FileDTO
{
    // ...

    public static function loadValidatorMetadata(ClassMetadata $metadata): void
    {
        $metadata->addPropertyConstraint('content', new Assert\Charset('UTF-8'));
    }
}
    