add('rule', TextType::class, [ 'required' => true, 'label' => 'config.form_rules.rule_label', ]) ->add('save', SubmitType::class, [ 'label' => 'config.form.save', ]) ; $tagsField = $builder ->create('tags', TextType::class, [ 'label' => 'config.form_rules.tags_label', ]) ->addModelTransformer(new StringToListTransformer(',')); $builder->add($tagsField); } public function configureOptions(OptionsResolver $resolver) { $resolver->setDefaults([ 'data_class' => 'Wallabag\CoreBundle\Entity\TaggingRule', ]); } public function getBlockPrefix() { return 'tagging_rule'; } }