wip: confirmation step

src/Form/BookingCreateStep4Type.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Form;
+
+use App\Form\Model\BookingCreateDto;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\CheckboxType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\Component\Validator\Constraints as Assert;
+
+class BookingCreateStep4Type extends AbstractType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options): void
+    {
+        $builder
+            ->add('confirmationAccepted', CheckboxType::class, [
+                'label' => 'Ich bestätige, dass alle Angaben korrekt sind und möchte verbindlich buchen.',
+                'mapped' => false,
+                'constraints' => [
+                    new Assert\IsTrue(
+                        message: 'Bitte bestätigen Sie Ihre Buchung.'
+                    ),
+                ],
+            ])
+        ;
+    }
+
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults([
+            'data_class' => BookingCreateDto::class,
+        ]);
+    }
+}