add ChoiceBlockType and ChoiceBlock

core/Entity/Site/Page/ChoiceBlock.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Core\Entity\Site\Page;
+
+use Doctrine\ORM\Mapping as ORM;
+
+/**
+ * @ORM\Entity
+ */
+class ChoiceBlock extends Block
+{
+    public function getValue()
+    {
+        return json_decode(parent::getValue(), true);
+    }
+
+    public function setValue($value): self
+    {
+        return parent::setValue(json_encode($value));
+    }
+}

core/Form/Site/Page/ChoiceBlockType.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Core\Form\Site\Page;
+
+use App\Core\Entity\Site\Page\ChoiceBlock;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+class ChoiceBlockType extends AbstractType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options)
+    {
+        $builder->add(
+            'value',
+            ChoiceType::class,
+            array_merge([
+                'required' => false,
+                'label' => false,
+            ], $options['options']),
+        );
+    }
+
+    public function configureOptions(OptionsResolver $resolver)
+    {
+        $resolver->setDefaults([
+            'data_class' => ChoiceBlock::class,
+            'options' => [],
+        ]);
+    }
+}