Data Transformers in list fields editable fix sonata-project#5693

allow use data_transformer in SetObjectFieldValueAction

create BooleanToStringTransformer for allows to use non-strings

update SetObjectFieldValueActionTest

use yoda conditions

fix errors in HelperControllerTest

test BooleanToStringTransformer

allow override transformers for 'date', 'boolean' and 'choice' field types

mark BooleanToStringTransformer and BooleanToStringTransformer classes as final

add example of using the data_transformer option in docs

add full docs about Symfony Data Transformers

optimize resolve Data Transformer

fix docs

create DataTransformerResolver service

add type hint for BooleanToStringTransformer::$trueValue

allow add a custom global transformers

field type should be a string

correct default value for $globalCustomTransformers

correct test DataTransformerResolverTest::testAddCustomGlobalTransformer()

add BC support usage of DataTransformerResolver

Update tests/Action/SetObjectFieldValueActionTest.php

Update tests/Action/SetObjectFieldValueActionTest.php

Update tests/Form/DataTransformer/BooleanToStringTransformerTest.php

Update tests/Form/DataTransformer/BooleanToStringTransformerTest.php

Update tests/Form/DataTransformerResolverTest.php

Update tests/Form/DataTransformerResolverTest.php

Update src/Action/SetObjectFieldValueAction.php

change "entity" word to "model" in documentations

change deprecated error message

add datetime in editable date form types

correct test transform datetime and date form types

test DateTime object in assertSame()

fix typo

restore getTemplate() return value in SetObjectFieldValueActionTest

use Yoda conditions

lazy-load predefined data transformers

add DataTransformerResolverInterface

use constants for determinate a field type

test laze-load data transformers

test usage DataTransformerResolver::addCustomGlobalTransformer()

create simple function in DataTransformerResolverTest

Process deprecation of FieldDescriptionInterface::getTargetEntity()

Use FieldDescriptionInterface::getTargetModel if exists sonata-project#6208

change usage getTargetEntity() -> getTargetModel() in DataTransformerResolverTest

merge changes from PR sonata-project#6167

register BooleanToStringTransformer as a service

docs/reference/action_list.rst

@@ -159,6 +159,115 @@ Available types and associated options
 | ``TemplateRegistry::TYPE_*``         |                     | See :doc:`Field Types <field_types>`                                  |
 +--------------------------------------+---------------------+-----------------------------------------------------------------------+
 
+Symfony Data Transformers
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If the model field has a limited list of values (enumeration), it is convenient to use a value object to control
+the available values. For example, consider the value object of moderation status with the following values:
+``awaiting``, ``approved``, ``rejected``::
+
+    final class ModerationStatus
+    {
+        public const AWAITING = 'awaiting';
+        public const APPROVED = 'approved';
+        public const REJECTED = 'rejected';
+
+        private static $instances = [];
+
+        private string $value;
+
+        private function __construct(string $value)
+        {
+            if (!array_key_exists($value, self::choices())) {
+                throw new \DomainException(sprintf('The value "%s" is not a valid moderation status.', $value));
+            }
+
+            $this->value = $value;
+        }
+
+        public static function byValue(string $value): ModerationStatus
+        {
+            // limitation of count object instances
+            if (!isset(self::$instances[$value])) {
+                self::$instances[$value] = new static($value);
+            }
+
+            return self::$instances[$value];
+        }
+
+        public function getValue(): string
+        {
+            return $this->value;
+        }
+
+        public static function choices(): array
+        {
+            return [
+                self::AWAITING => 'moderation_status.awaiting',
+                self::APPROVED => 'moderation_status.approved',
+                self::REJECTED => 'moderation_status.rejected',
+            ];
+        }
+
+        public function __toString(): string
+        {
+            return self::choices()[$this->value];
+        }
+    }
+
+To use this Value Object in the _`Symfony Form`: https://symfony.com/doc/current/forms.html component, we need a
+_`Data Transformer`: https://symfony.com/doc/current/form/data_transformers.html ::
+
+    use Symfony\Component\Form\DataTransformerInterface;
+    use Symfony\Component\Form\Exception\TransformationFailedException;
+
+    final class ModerationStatusDataTransformer implements DataTransformerInterface
+    {
+        public function transform($value): ?string
+        {
+            $status = $this->reverseTransform($value);
+
+            return $status instanceof ModerationStatus ? $status->value() : null;
+        }
+
+        public function reverseTransform($value): ?ModerationStatus
+        {
+            if (null === $value || '' === $value) {
+                return null;
+            }
+
+            if ($value instanceof ModerationStatus) {
+                return $value;
+            }
+
+            try {
+                return ModerationStatus::byValue($value);
+            } catch (\Throwable $e) {
+                throw new TransformationFailedException($e->getMessage(), $e->getCode(), $e);
+            }
+        }
+    }
+
+For quick moderation of objects, it is convenient to do this on the page for viewing all objects. But if we just
+indicate the field as editable, then when editing we get in the object a string with the value itself (``awaiting``,
+``approved``, ``rejected``), and not the Value Object (``ModerationStatus``). To solve this problem, you must specify
+the Data Transformer in the ``data_transformer`` field so that it correctly converts the input data into the data
+expected by your object::
+
+    // ...
+
+    protected function configureListFields(ListMapper $listMapper)
+    {
+        $listMapper
+            ->add('moderation_status', 'choice', [
+                'editable' => true,
+                'choices' => ModerationStatus::choices(),
+                'data_transformer' => new ModerationStatusDataTransformer(),
+            ])
+        ;
+    }
+
+
 Customizing the query used to generate the list
 -----------------------------------------------
 

src/Action/SetObjectFieldValueAction.php

@@ -13,9 +13,12 @@
 
 namespace Sonata\AdminBundle\Action;
 
-use Sonata\AdminBundle\Admin\FieldDescriptionInterface;
 use Sonata\AdminBundle\Admin\Pool;
+use Sonata\AdminBundle\Form\DataTransformerResolver;
+use Sonata\AdminBundle\Form\DataTransformerResolverInterface;
+use Sonata\AdminBundle\Templating\TemplateRegistry;
 use Sonata\AdminBundle\Twig\Extension\SonataAdminExtension;
+use Symfony\Component\Form\DataTransformerInterface;
 use Symfony\Component\HttpFoundation\JsonResponse;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
@@ -41,7 +44,16 @@ final class SetObjectFieldValueAction
      */
     private $validator;
 
-    public function __construct(Environment $twig, Pool $pool, $validator)
+    /**
+     * @var DataTransformerResolver
+     */
+    private $resolver;
+
+    /**
+     * @param ValidatorInterface           $validator
+     * @param DataTransformerResolver|null $resolver
+     */
+    public function __construct(Environment $twig, Pool $pool, $validator, $resolver = null)
     {
         // NEXT_MAJOR: Move ValidatorInterface check to method signature
         if (!($validator instanceof ValidatorInterface)) {
@@ -51,9 +63,22 @@ public function __construct(Environment $twig, Pool $pool, $validator)
                 ValidatorInterface::class
             ));
         }
+
+        // NEXT_MAJOR: Move DataTransformerResolver check to method signature
+        if (!$resolver instanceof DataTransformerResolverInterface) {
+            @trigger_error(sprintf(
+                'Passing other type than %s in argument 4 to %s() is deprecated since sonata-project/admin-bundle 3.x and will throw %s exception in 4.0.',
+                DataTransformerResolverInterface::class,
+                __METHOD__,
+                \TypeError::class
+            ), E_USER_DEPRECATED);
+            $resolver = new DataTransformerResolver();
+        }
+
         $this->pool = $pool;
         $this->twig = $twig;
         $this->validator = $validator;
+        $this->resolver = $resolver;
     }
 
     /**
@@ -119,43 +144,25 @@ public function __invoke(Request $request): JsonResponse
             $propertyPath = new PropertyPath($field);
         }
 
-        // Handle date and datetime types have setter expecting a DateTime object
-        if ('' !== $value && \in_array($fieldDescription->getType(), ['date', 'datetime'], true)) {
-            $inputTimezone = new \DateTimeZone(date_default_timezone_get());
-            $outputTimezone = $fieldDescription->getOption('timezone');
+        if ('' === $value) {
+            $this->pool->getPropertyAccessor()->setValue($object, $propertyPath, null);
+        } else {
+            $dataTransformer = $this->resolver->resolve($fieldDescription, $admin->getModelManager());
 
-            if ($outputTimezone && !$outputTimezone instanceof \DateTimeZone) {
-                $outputTimezone = new \DateTimeZone($outputTimezone);
+            if ($dataTransformer instanceof DataTransformerInterface) {
+                $value = $dataTransformer->reverseTransform($value);
             }
 
-            $value = new \DateTime($value, $outputTimezone ?: $inputTimezone);
-            $value->setTimezone($inputTimezone);
-        }
-
-        // Handle boolean type transforming the value into a boolean
-        if ('' !== $value && 'boolean' === $fieldDescription->getType()) {
-            $value = filter_var($value, FILTER_VALIDATE_BOOLEAN);
-        }
-
-        // Handle entity choice association type, transforming the value into entity
-        if ('' !== $value
-            && 'choice' === $fieldDescription->getType()
-            && null !== $fieldDescription->getOption('class')
-            // NEXT_MAJOR: Replace this call with "$fieldDescription->getOption('class') === $fieldDescription->getTargetModel()".
-            && $this->hasFieldDescriptionAssociationWithClass($fieldDescription, $fieldDescription->getOption('class'))
-        ) {
-            $value = $admin->getModelManager()->find($fieldDescription->getOption('class'), $value);
-
-            if (!$value) {
+            if (!$value && TemplateRegistry::TYPE_CHOICE === $fieldDescription->getType()) {
                 return new JsonResponse(sprintf(
                     'Edit failed, object with id: %s not found in association: %s.',
                     $originalValue,
                     $field
                 ), Response::HTTP_NOT_FOUND);
             }
-        }
 
-        $this->pool->getPropertyAccessor()->setValue($object, $propertyPath, '' !== $value ? $value : null);
+            $this->pool->getPropertyAccessor()->setValue($object, $propertyPath, $value);
+        }
 
         $violations = $this->validator->validate($object);
 
@@ -180,10 +187,4 @@ public function __invoke(Request $request): JsonResponse
 
         return new JsonResponse($content, Response::HTTP_OK);
     }
-
-    private function hasFieldDescriptionAssociationWithClass(FieldDescriptionInterface $fieldDescription, string $class): bool
-    {
-        return (method_exists($fieldDescription, 'getTargetModel') && $class === $fieldDescription->getTargetModel())
-            || $class === $fieldDescription->getTargetEntity();
-    }
 }

src/Controller/HelperController.php

@@ -20,6 +20,8 @@
 use Sonata\AdminBundle\Action\SetObjectFieldValueAction;
 use Sonata\AdminBundle\Admin\AdminHelper;
 use Sonata\AdminBundle\Admin\Pool;
+use Sonata\AdminBundle\Form\DataTransformerResolver;
+use Sonata\AdminBundle\Form\DataTransformerResolverInterface;
 use Symfony\Component\HttpFoundation\JsonResponse;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
@@ -64,9 +66,15 @@ class HelperController
     protected $validator;
 
     /**
-     * @param ValidatorInterface $validator
+     * @var DataTransformerResolver
      */
-    public function __construct(Environment $twig, Pool $pool, AdminHelper $helper, $validator)
+    private $resolver;
+
+    /**
+     * @param ValidatorInterface           $validator
+     * @param DataTransformerResolver|null $resolver
+     */
+    public function __construct(Environment $twig, Pool $pool, AdminHelper $helper, $validator, $resolver = null)
     {
         // NEXT_MAJOR: Move ValidatorInterface check to method signature
         if (!($validator instanceof ValidatorInterface)) {
@@ -77,10 +85,22 @@ public function __construct(Environment $twig, Pool $pool, AdminHelper $helper,
             ));
         }
 
+        // NEXT_MAJOR: Move DataTransformerResolver check to method signature
+        if (!$resolver instanceof DataTransformerResolverInterface) {
+            @trigger_error(sprintf(
+                'Passing other type than %s in argument 4 to %s() is deprecated since sonata-project/admin-bundle 3.x and will throw %s exception in 4.0.',
+                DataTransformerResolverInterface::class,
+                __METHOD__,
+                \TypeError::class
+            ), E_USER_DEPRECATED);
+            $resolver = new DataTransformerResolver();
+        }
+
         $this->twig = $twig;
         $this->pool = $pool;
         $this->helper = $helper;
         $this->validator = $validator;
+        $this->resolver = $resolver;
     }
 
     /**
@@ -124,7 +144,7 @@ public function getShortObjectDescriptionAction(Request $request)
      */
     public function setObjectFieldValueAction(Request $request)
     {
-        $action = new SetObjectFieldValueAction($this->twig, $this->pool, $this->validator);
+        $action = new SetObjectFieldValueAction($this->twig, $this->pool, $this->validator, $this->resolver);
 
         return $action($request);
     }

src/Form/DataTransformer/BooleanToStringTransformer.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the Sonata Project package.
+ *
+ * (c) Thomas Rabaix <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Sonata\AdminBundle\Form\DataTransformer;
+
+use Symfony\Component\Form\DataTransformerInterface;
+
+/**
+ * This is analog of Symfony\Component\Form\Extension\Core\DataTransformer\BooleanToStringTransformer
+ * which allows you to use non-strings in reverseTransform() method.
+ *
+ * @author Peter Gribanov <[email protected]>
+ */
+final class BooleanToStringTransformer implements DataTransformerInterface
+{
+    /**
+     * @var string
+     */
+    private $trueValue;
+
+    public function __construct(string $trueValue)
+    {
+        $this->trueValue = $trueValue;
+    }
+
+    public function transform($value): ?string
+    {
+        return $value ? $this->trueValue : null;
+    }
+
+    public function reverseTransform($value): bool
+    {
+        return filter_var($value, FILTER_VALIDATE_BOOLEAN);
+    }
+}