Sylius\Bundle\ReviewBundle\Form\Type\ReviewType::buildForm PHP Method

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('rating', ChoiceType::class, ['choices' => $this->createRatingList($options['rating_steps']), 'label' => 'sylius.form.review.rating', 'expanded' => true, 'multiple' => false, 'constraints' => [new Valid()]])->add('title', TextType::class, ['label' => 'sylius.form.review.title'])->add('comment', TextareaType::class, ['label' => 'sylius.form.review.comment']);
    }

 /**
  * {@inheritdoc}
  */
 public function buildForm(FormBuilderInterface $builder, array $options)
 {
     parent::buildForm($builder, $options);
     $builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) use($options) {
         $form = $event->getForm();
         $review = $event->getData();
         Assert::isInstanceOf($review, ReviewInterface::class);
         if (null === $review->getAuthor()) {
             $form->add('author', CustomerGuestType::class, ['constraints' => [new Valid()]]);
         }
     });
 }