feat: step input for room type selection

src/Form/RoomSelectType.php

@@ -4,7 +4,6 @@ namespace App\Form;
 
 use App\Form\Model\RoomSelectionDto;
 use Symfony\Component\Form\AbstractType;
-use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
 use Symfony\Component\Form\Extension\Core\Type\HiddenType;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\Form\FormEvent;
@@ -28,9 +27,11 @@ class RoomSelectType extends AbstractType
                     $label .= sprintf(' (€%s pro Person)', $formattedPrice);
                 }
 
-                $form->add('quantity', ChoiceType::class, [
+                $form->add('quantity', StepSelectChoiceType::class, [
                     'label' => $label,
                     'required' => true,
+                    'min_value' => 0,
+                    'max_value' => $data->maxQuantity,
                     'choices' => ['-' => 0] + array_combine(range(1, $data->maxQuantity), range(1, $data->maxQuantity)),
                 ]);
             });

src/Form/StepSelectChoiceType.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Form;
+
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
+use Symfony\Component\Form\FormInterface;
+use Symfony\Component\Form\FormView;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+class StepSelectChoiceType extends AbstractType
+{
+    public function getParent(): string
+    {
+        return ChoiceType::class;
+    }
+
+    public function buildView(FormView $view, FormInterface $form, array $options): void
+    {
+        $view->vars['min_value'] = $options['min_value'];
+        $view->vars['max_value'] = $options['max_value'];
+    }
+
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults([
+            'min_value' => null,
+            'max_value' => null,
+        ]);
+    }
+}