From a463786a94041a759e6420045eb031183a5f6afc Mon Sep 17 00:00:00 2001
From: =?utf8?q?Rapha=C3=ABl=20Gertz?= <git@rapsys.eu>
Date: Mon, 28 Dec 2020 08:27:55 +0100
Subject: [PATCH] Add HidenEntity field type

---
 Form/Extension/Type/HiddenEntityType.php | 113 +++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 Form/Extension/Type/HiddenEntityType.php

diff --git a/Form/Extension/Type/HiddenEntityType.php b/Form/Extension/Type/HiddenEntityType.php
new file mode 100644
index 0000000..3e85cc6
--- /dev/null
+++ b/Form/Extension/Type/HiddenEntityType.php
@@ -0,0 +1,113 @@
+<?php
+
+namespace Rapsys\AirBundle\Form\Extension\Type;
+
+use Doctrine\Persistence\ManagerRegistry;
+use Symfony\Component\Form\DataTransformerInterface;
+use Symfony\Component\Form\Exception\TransformationFailedException;
+use Symfony\Component\Form\Extension\Core\Type\HiddenType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\Options;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+/**
+ * Hidden Entity Type class definition
+ *
+ * @see https://symfony.com/doc/current/form/create_custom_field_type.html
+ */
+class HiddenEntityType extends HiddenType implements DataTransformerInterface {
+	/**
+	 * @var ManagerRegistry $dm
+	 */
+	private $dm;
+
+	/**
+	 * @var string $class
+	 */
+	private $class;
+
+	/**
+	 * Constructor
+	 *
+	 * @param ManagerRegistry $doctrine
+	 */
+	public function __construct(ManagerRegistry $doctrine) {
+		$this->dm = $doctrine;
+	}
+
+    /**
+	 * Configure options
+	 *
+     * {@inheritdoc}
+     */
+    public function configureOptions(OptionsResolver $resolver) {
+		//Call parent
+        parent::configureOptions($resolver);
+
+        // Derive "data_class" option from passed "data" object
+        $class = function (Options $options) {
+            return isset($options['data']) && \is_object($options['data']) ? \get_class($options['data']) : null;
+        };
+
+        $resolver->setDefaults([
+            'class' => $class
+		]);
+	}
+
+
+	/**
+	 * Build form
+	 *
+	 * {@inheritdoc}
+	 */
+	public function buildForm(FormBuilderInterface $builder, array $options): void {
+		#$this->entityClass = sprintf('App\Entity\%s', ucfirst($builder->getName()));
+		#var_dump($builder->getName());
+		#$this->entityClass = sprintf('App\Entity\%s', ucfirst($builder->getName()));
+		//$this->dataClass[$builder->getName()] = $options['data_class'];
+
+		//Set class from options['class']
+		$this->class = $options['class'];
+
+		//Check class
+		if (empty($this->class)) {
+			//Set class from namespace and field name
+			$this->class = str_replace('Form\\Extension\\Type', 'Entity\\' ,__NAMESPACE__).ucfirst($builder->getName());
+		}
+
+		//Set this as model transformer
+		//XXX: clone the model transformer to allow multiple hiddenentitytype field with different class
+		$builder->addModelTransformer(clone $this);
+	}
+
+	public function transform($data): string {
+		// Modified from comments to use instanceof so that base classes or interfaces can be specified
+		if ($data === null || !$data instanceof $this->class) {
+			return '';
+		}
+
+		$res = $data->getId();
+
+		return $res;
+	}
+
+	public function reverseTransform($data) {
+		if (!$data) {
+			return null;
+		}
+
+		$res = null;
+		try {
+			$rep = $this->dm->getRepository($this->class);
+			$res = $rep->findOneById($data);
+		} catch (\Exception $e) {
+			throw new TransformationFailedException($e->getMessage());
+		}
+
+		if ($res === null) {
+			throw new TransformationFailedException(sprintf('A %s with id "%s" does not exist!', $this->class, $data));
+		}
+
+		return $res;
+	}
+}
-- 
2.41.1