fix cs and add EntityToIdTransformer

src/Bundle/ChillMainBundle/Form/DataTransformer/IdToEntityDataTransformer.php

@@ -0,0 +1,82 @@
+<?php
+
+/**
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Chill\MainBundle\Form\DataTransformer;
+
+use Closure;
+use Doctrine\Persistence\ObjectRepository;
+use Symfony\Component\Form\DataTransformerInterface;
+use function call_user_func;
+
+/**
+ * @template T
+ */
+class IdToEntityDataTransformer implements DataTransformerInterface
+{
+    private Closure $getId;
+
+    private bool $multiple = false;
+
+    private ObjectRepository $repository;
+
+    /**
+     * @param Closure $getId
+     */
+    public function __construct(ObjectRepository $repository, bool $multiple = false, ?callable $getId = null)
+    {
+        $this->repository = $repository;
+        $this->multiple = $multiple;
+        $this->getId = $getId ?? static function (object $o) { return $o->getId(); };
+    }
+
+    /**
+     * @param string $value
+     *
+     * @return array|object[]|T[]|T|object
+     */
+    public function reverseTransform($value)
+    {
+        if ($this->multiple) {
+            if (null === $value | '' === $value) {
+                return [];
+            }
+
+            return array_map(
+                fn (string $id): ?object => $this->repository->findOneBy(['id' => (int) $id]),
+                explode(',', $value)
+            );
+        }
+
+        if (null === $value | '' === $value) {
+            return null;
+        }
+
+        return $this->repository->findOneBy(['id' => (int) $value]);
+    }
+
+    /**
+     * @param object|T|object[]|T[] $value
+     */
+    public function transform($value): string
+    {
+        if ($this->multiple) {
+            $ids = [];
+
+            foreach ($value as $v) {
+                $ids[] = call_user_func($this->getId, $v);
+            }
+
+            return implode(',', $ids);
+        }
+
+        return call_user_func($this->getId, $value);
+    }
+}