[FIXED] Use two listeners of FormEvents::POST_SUBMIT

Issue

I want to modify some form fields depending on submitted data so in the form class I did:

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('year', ChoiceType::class, [
                'choices' => ['Year' => '-1'] + array_combine(range(date('Y'), date('Y') - 19), range(date('Y'), date('Y') - 19)),
                'label' => false,
            ])
            ->add('make', ChoiceType::class, ['choices' => ['Make' => '-1'], 'label' => false])
            ->add('model', ChoiceType::class, ['choices' => ['Model' => '-1'], 'label' => false]);

        //...

        $builder->get('year')->addEventListener(
            FormEvents::POST_SUBMIT,
            function (FormEvent $event) {
                $year = $event->getForm()->getData();
                $makes = $year === '-1' ? ['Make' => '-1'] : $this->customService->getMakes();
                $event->getForm()->getParent()
                    ->add('make', ChoiceType::class, ['choices' => $makes, 'label' => false]);
            }
        );
        $builder->get('make')->addEventListener(
            FormEvents::POST_SUBMIT,
            function (FormEvent $event) {
                $make = $event->getForm()->getData();
                $models = $make === '-1'  ? ['Model' => '-1'] : $this->customService->getModels();
                $event->getForm()->getParent()
                    ->add('model', ChoiceType::class, ['choices' => $models, 'label' => false]);
            }
        );
    }

However, even when I submit the make field, the second listener is never executed, so I'm not able to modify the model field. Any idea?

Solution

The problem seems to be that when modifying the make field in the year field event listener, then the make field event listener is never called. I found a way to make it work:

    private $makes;
    private $models;

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        //...

        $builder->get('year')->addEventListener(
            FormEvents::POST_SUBMIT,
            function (FormEvent $event) {
                $year = $event->getForm()->getData();
                $this->makes = $year === '-1' ? ['Make' => '-1'] : $this->customService->getMakes();
            }
        );
        $builder->get('make')->addEventListener(
            FormEvents::POST_SUBMIT,
            function (FormEvent $event) {
                $make = $event->getForm()->getData();
                $this->models = $make === '-1'  ? ['Model' => '-1'] : $this->customService->getModels();
                $event->getForm()->getParent()
                    ->add('make', ChoiceType::class, ['choices' => $this->makes, 'label' => false, 'data' => $make]);
            }
        );
        // Same with model field
    }

Answered By - Manolo