如何在symfony中设置验证顺序，字段验证取决于另一个字段？

Question

例如，我有一个包含两个字段的实体：

    /**
     * @Assert\Range(min=1, max=self::SPEND_MAX)
     */
    public ?int $spendMax = null;

    /**
     * @Assert\NotBlank()
     * @Assert\Length(max=255)
     */
    public string $name;

如何设置 spendMax 字段，首先我需要验证字段 name 是否为空，如果为真，我可以开始验证 Range spendMax。 如果 name 为 null，则 spendMax 的验证为 false。

Answer 1

您可以创建自己的自定义方法来进行验证，并安排在持久化或更新实体之前调用它。

类似的东西：

abstract class ValidatableEntity
{
    /**
     * @ORM\PrePersist
     * @ORM\PreUpdate
     */
    public function validate(): void
    {
        $validator = Validation::createValidatorBuilder()
                                ->enableAnnotationMapping()
                                ->getValidator()
        ;
        $violations = $validator->validate($this);
        if (0 !== $violations->count()) {
            throw new ValidationFailedException($this, $violations);
        }
    }

    /**
     * Intended to be called from the prePersist Event from EntityPersistenceEventSubscriber service
     * when this object is to be persisted.
     * The method is intended to be overridden in derived classes and does nothing here.
     * If the validation in the derived class is unsuccessful, the method should throw
     * a ValidationFailedException.
     * Note that since the object has not yet been persisted, its ID field will not be defined in this method.
     */
    public function prePersistValidation(EntityManager $entityManager): void
    {
        return;
    }

    /**
     * Intended to be called from the preUpdate Event from EntityPersistenceEventSubscriber service
     * when this object is to be updated.
     * The method is intended to be overridden in derived classes and does nothing here.
     * If the validation in the derived class is unsuccessful, the method should throw
     * a ValidationFailedException.
     */
    public function preUpdateValidation(PreUpdateEventArgs $args): void
    {
        // How to get an entity manager here:
        // $entityManager = $args->getObjectManager();
        return;
    }

要使用它，请从这个派生实体类并覆盖 preUpdateValidation 和 prePersistValidation 方法。