在symfony上生成表单，属性不存在

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use App\Entity\YourEntity;

class YourFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('yourProperty')
            // 添加其他属性...
        ;
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => YourEntity::class,
        ]);
    }
}

use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

class YourFormSubscriber implements EventSubscriberInterface
{
    public static function getSubscribedEvents()
    {
        return [
            FormEvents::PRE_SET_DATA => 'preSetData',
        ];
    }

    public function preSetData(FormEvent $event)
    {
        $form = $event->getForm();
        $data = $event->getData();

        // 根据实体数据动态添加属性
        if ($data instanceof YourEntity) {
            $form->add('yourDynamicProperty');
        }
    }
}

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class YourFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('yourProperty')
            // 添加其他属性...
        ;

        $builder->addEventSubscriber(new YourFormSubscriber());
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => YourEntity::class,
        ]);
    }
}