<?phpnamespace Aviatur\FormBundle\Form;use Symfony\Component\Form\AbstractType;use Symfony\Component\OptionsResolver\OptionsResolver;class DatePickerType extends AbstractType{ public function configureOptions(OptionsResolver $resolver) { $resolver->setDefaults([ 'widget' => 'single_text', ]); } public function getParent() { return \Symfony\Component\Form\Extension\Core\Type\DateType::class; } public function getBlockPrefix() { return 'datePicker'; }}