add( 'label', TextType::class, [ 'label' => 'Label', 'required' => true, 'attr' => [ ], 'constraints' => [ new NotBlank(), ], ] ); $builder->add( 'value', TextType::class, [ 'label' => 'Value', 'required' => false, 'attr' => [ ], 'constraints' => [ ], ] ); } public function configureOptions(OptionsResolver $resolver) { $resolver->setDefaults([ 'data_class' => null, ]); } }