add('phone', TelType::class, ['attr' => ['placeholder' => 'Your phone'], 'required' => false]); } //Return form return $form; } /** * {@inheritdoc} */ public function configureOptions(OptionsResolver $resolver) { //Call parent configure options parent::configureOptions($resolver); //Set defaults $resolver->setDefaults(['phone' => true]); //Add extra mail option $resolver->setAllowedTypes('phone', 'boolean'); } /** * {@inheritdoc} */ public function getName() { return 'rapsys_air_register'; } }