WIP: Implement profile editing

src/Form/DataTransformer/EntityToIdTransformer.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Form\DataTransformer;
+
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\Form\DataTransformerInterface;
+use Symfony\Component\Form\Exception\TransformationFailedException;
+
+class EntityToIdTransformer implements DataTransformerInterface
+{
+    public function __construct(private readonly EntityManagerInterface $entityManager, private readonly string $class)
+    {
+    }
+
+    public function transform($value)
+    {
+        if (null === $value) {
+            return null;
+        }
+
+        return $value->getId();
+    }
+
+    public function reverseTransform($value)
+    {
+        if (empty($value)) {
+            return null;
+        }
+
+        $entity = $this->entityManager->getRepository($this->class)->find($value);
+
+        if (null === $entity) {
+            throw new TransformationFailedException(sprintf('No %s with id %d found', $this->class, $value));
+        }
+
+        return $entity;
+    }
+}