public function configureOptions(OptionsResolver $resolver) { parent::configureOptions($resolver); $resolver->setDefaults(array('date_widget' => 'single_text', 'time_widget' => 'single_text', 'date_format' => 'dd/MM/yyyy', 'years' => range(1900, 2099), 'with_seconds' => false, 'placeholder' => 'placeholder1', 'html5' => true)); }