Setup PLZ field for user

src/Form/RegistrationFormType.php

@@ -20,6 +20,7 @@ class RegistrationFormType extends AbstractType
         $builder
             ->add('email', EmailType::class)
             ->add('username')
+            ->add('zipcode')
             ->add('agreeTerms', CheckboxType::class, [
                 'mapped' => false,
                 'constraints' => [