Symfony 根据条件验证对象

Question

我想仅在 $hasAddress 为真时验证我的 AddressDto 对象。有可能吗？

final class UserDto
{
    /**
     * @var bool
     * @Assert\NotNull()
     */
    public $hasAddress;

    /**
     * @var AddressDto
     * @Assert\Valid()
     */
    public $address;
}

final class AddressDto
{
    /**
     * @Assert\NotBlank()
     */
    public $postalCode;

    /**
     * @Assert\NotBlank()
     */
    public $city;

    /**
     * @Assert\NotBlank()
     */
    public $street;

    /**
     * @Assert\NotBlank()
     */
    public $houseNumber;
}

我尝试了回调验证，它有效，但我无法将错误附加到字段，只能附加到父表单。

final class UserDto
{
    /**
     * @var bool
     * @Assert\NotNull()
     */
    public $hasAddress;

    /**
     * @var AddressDto
     */
    public $address;

    /**
     * @Assert\Callback()
     */
    public function validate(ExecutionContextInterface $context, $payload): void
    {
        if ($this->hasAddress) {
            $errors = $context->getValidator()->validate($this->address, new Assert\Valid());

            foreach ($errors as $error) {
                $context->buildViolation($error->getMessage())
                    ->addViolation();
            }
        }
    }
}

Answer 1

我已经检查了验证器文档，您只需将“atPath”添加到上下文中，这样您就可以指定要验证的字段。这是文档的 link：https://symfony.com/doc/current/validation/custom_constraint.html.

所以代码应该是：

public function validate(ExecutionContextInterface $context, $payload): void
{
    if ($this->hasAddress) {
        $errors = $context->getValidator()->validate($this->address, new Assert\Valid());

        foreach ($errors as $error) {
            $context->buildViolation($error->getMessage())
                ->atPath('address')
                ->addViolation();
        }
    }
}

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