add('rule', 'text', array('required' => true)) ->add('save', 'submit') ; $tagsField = $builder ->create('tags', 'text') ->addModelTransformer(new StringToListTransformer(',')); $builder->add($tagsField); } public function configureOptions(OptionsResolver $resolver) { $resolver->setDefaults(array( 'data_class' => 'Wallabag\CoreBundle\Entity\TaggingRule', )); } public function getName() { return 'tagging_rule'; } }