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[Serializer] add a context to allow invalid values in BackedEnumNormalizer #48821

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Merged
merged 1 commit into from
Mar 3, 2023
Merged

[Serializer] add a context to allow invalid values in BackedEnumNormalizer #48821

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1 change: 1 addition & 0 deletions src/Symfony/Component/Serializer/CHANGELOG.md
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Expand Up @@ -5,6 +5,7 @@ CHANGELOG
---

* Add `XmlEncoder::SAVE_OPTIONS` context option
* Add `BackedEnumNormalizer::ALLOW_INVALID_VALUES` context option
* Deprecate `MissingConstructorArgumentsException` in favor of `MissingConstructorArgumentException`

6.2
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35 changes: 35 additions & 0 deletions src/Symfony/Component/Serializer/Context/Normalizer/BackedEnumNormalizerContextBuilder.php
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@@ -0,0 +1,35 @@
<?php

/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Symfony\Component\Serializer\Context\Normalizer;

use Symfony\Component\Serializer\Context\ContextBuilderInterface;
use Symfony\Component\Serializer\Context\ContextBuilderTrait;
use Symfony\Component\Serializer\Normalizer\BackedEnumNormalizer;

/**
* A helper providing autocompletion for available BackedEnumNormalizer options.
*
* @author Nicolas PHILIPPE <[email protected]>
*/
final class BackedEnumNormalizerContextBuilder implements ContextBuilderInterface
{
use ContextBuilderTrait;

/**
* Configures if invalid values are allowed in denormalization.
* They will be denormalized into `null` values.
*/
public function withAllowInvalidValues(bool $allowInvalidValues): static
{
return $this->with(BackedEnumNormalizer::ALLOW_INVALID_VALUES, $allowInvalidValues);
}
}
17 changes: 17 additions & 0 deletions src/Symfony/Component/Serializer/Normalizer/BackedEnumNormalizer.php
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Expand Up @@ -22,6 +22,11 @@
*/
final class BackedEnumNormalizer implements NormalizerInterface, DenormalizerInterface, CacheableSupportsMethodInterface
{
/**
* If true, will denormalize any invalid value into null.
*/
public const ALLOW_INVALID_VALUES = 'allow_invalid_values';

public function normalize(mixed $object, string $format = null, array $context = []): int|string
{
if (!$object instanceof \BackedEnum) {
Expand All @@ -45,6 +50,18 @@ public function denormalize(mixed $data, string $type, string $format = null, ar
throw new InvalidArgumentException('The data must belong to a backed enumeration.');
}

if ($context[self::ALLOW_INVALID_VALUES] ?? false) {
if (null === $data || (!\is_int($data) && !\is_string($data))) {
return null;
}

try {
return $type::tryFrom($data);
} catch (\TypeError) {
return null;
}
}

if (!\is_int($data) && !\is_string($data)) {
throw NotNormalizableValueException::createForUnexpectedDataType('The data is neither an integer nor a string, you should pass an integer or a string that can be parsed as an enumeration case of type '.$type.'.', $data, [Type::BUILTIN_TYPE_INT, Type::BUILTIN_TYPE_STRING], $context['deserialization_path'] ?? null, true);
}
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35 changes: 35 additions & 0 deletions .../Component/Serializer/Tests/Context/Normalizer/BackedEnumNormalizerContextBuilderTest.php
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<?php

/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Symfony\Component\Serializer\Tests\Context\Normalizer;

use PHPUnit\Framework\TestCase;
use Symfony\Component\Serializer\Context\Normalizer\BackedEnumNormalizerContextBuilder;
use Symfony\Component\Serializer\Normalizer\BackedEnumNormalizer;

class BackedEnumNormalizerContextBuilderTest extends TestCase
{
private BackedEnumNormalizerContextBuilder $contextBuilder;

protected function setUp(): void
{
$this->contextBuilder = new BackedEnumNormalizerContextBuilder();
}

public function testWithers()
{
$context = $this->contextBuilder->withAllowInvalidValues(true)->toArray();
self::assertSame([BackedEnumNormalizer::ALLOW_INVALID_VALUES => true], $context);

$context = $this->contextBuilder->withAllowInvalidValues(false)->toArray();
self::assertSame([BackedEnumNormalizer::ALLOW_INVALID_VALUES => false], $context);
}
}
15 changes: 15 additions & 0 deletions src/Symfony/Component/Serializer/Tests/Normalizer/BackedEnumNormalizerTest.php
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Expand Up @@ -114,4 +114,19 @@ public function testSupportsNormalizationShouldFailOnAnyPHPVersionForNonEnumObje
{
$this->assertFalse($this->normalizer->supportsNormalization(new \stdClass()));
}

public function testItUsesTryFromIfContextIsPassed()
{
$this->assertNull($this->normalizer->denormalize(1, IntegerBackedEnumDummy::class, null, [BackedEnumNormalizer::ALLOW_INVALID_VALUES => true]));
$this->assertNull($this->normalizer->denormalize('', IntegerBackedEnumDummy::class, null, [BackedEnumNormalizer::ALLOW_INVALID_VALUES => true]));
$this->assertNull($this->normalizer->denormalize(null, IntegerBackedEnumDummy::class, null, [BackedEnumNormalizer::ALLOW_INVALID_VALUES => true]));

$this->assertSame(IntegerBackedEnumDummy::SUCCESS, $this->normalizer->denormalize(200, IntegerBackedEnumDummy::class, null, [BackedEnumNormalizer::ALLOW_INVALID_VALUES => true]));

$this->assertNull($this->normalizer->denormalize(1, StringBackedEnumDummy::class, null, [BackedEnumNormalizer::ALLOW_INVALID_VALUES => true]));
$this->assertNull($this->normalizer->denormalize('foo', StringBackedEnumDummy::class, null, [BackedEnumNormalizer::ALLOW_INVALID_VALUES => true]));
$this->assertNull($this->normalizer->denormalize(null, StringBackedEnumDummy::class, null, [BackedEnumNormalizer::ALLOW_INVALID_VALUES => true]));

$this->assertSame(StringBackedEnumDummy::GET, $this->normalizer->denormalize('GET', StringBackedEnumDummy::class, null, [BackedEnumNormalizer::ALLOW_INVALID_VALUES => true]));
}
}