Question

我有一个表单，我在我的类ItemType中创建：

class ItemType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('name', TextType::class,
                array(
                    'constraints' => array(
                    )
                )
            )
            ->add('shortname', TextType::class,
                array(
                    'constraints' => array(
                    )
                )
            )
            ->add('somethingelse', TextType::class,
                array(
                    'constraints' => array(
                         new NotBlank()
                    )
                )
            )
        ;
    }

    public function getBlockPrefix()
    {
        return 'item';
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Bundle\Entity\Item',
            'csrf_protection'   => false,
            'allow_extra_fields' => true
        ));
    }
}

现在我要做的是编写一个自定义约束，确保填充名称或短名称。我怎样才能做到这一点？这是一个应该在表格而不是在一个领域的约束......对吗？或者我使用validation_groups？如果是这样 - 如何向validation_group添加约束？

提前致谢

Answer 1

callback constraint可用于实现更复杂的验证规则：

use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\Validator\Context\ExecutionContextInterface;

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults(array(
        'data_class' => 'Bundle\Entity\Item',
        'csrf_protection'   => false,
        'allow_extra_fields' => true,
        'constraints' => [
            new Assert\Callback(['callback' => function (ExecutionContextInterface $context) {
                $object = $context->getObject();

                if (null === $object->getName() && null === $object->getShortname()) {
                    $context->buildViolation('Either name or short name must be specified')->addViolation();
                }
            }]),
        ],
    ));
}

Symfony 2.8自定义约束2个字段

1 个答案: