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[serializer] prevent mixup in normalizer of the object to populate #30977

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Merged
merged 1 commit into from
Apr 8, 2019
Merged

[serializer] prevent mixup in normalizer of the object to populate #30977

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2 changes: 2 additions & 0 deletions src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
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Original file line number Diff line number Diff line change
Expand Up @@ -330,6 +330,8 @@ protected function instantiateObject(array &$data, $class, array &$context, \Ref

return $object;
}
// clean up even if no match
unset($context[static::OBJECT_TO_POPULATE]);
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this means we keep silently ignoring a non-matching object_to_populate. should we instead throw an exception when object to populate is set in the options but does not match? it seems to me that it indicates a programmer error.

not sure about BC of throwing the exception though. its in some way a bugfix, but could break existing code when relying on the serializer silently ignoring the mistake.

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I would not throw an exception in 3.4 for BC reason. We can keep the code as is in 3.4, generate a deprecation notice on master, and throw an exception in 5.0.

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great plan! tell me when this is merged to master, then i do the deprecation pull request.


$constructor = $this->getConstructor($data, $class, $context, $reflectionClass, $allowedAttributes);
if ($constructor) {
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27 changes: 27 additions & 0 deletions src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
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Expand Up @@ -315,6 +315,30 @@ public function testGroupsDenormalizeWithNameConverter()
);
}

public function testObjectToPopulateNoMatch()
{
$classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
$this->normalizer = new ObjectNormalizer($classMetadataFactory, null, null, new PhpDocExtractor());
new Serializer([$this->normalizer]);

$objectToPopulate = new ObjectInner();
$objectToPopulate->foo = 'foo';

$outer = $this->normalizer->denormalize([
'foo' => 'foo',
'inner' => [
'bar' => 'bar',
],
], ObjectOuter::class, null, [ObjectNormalizer::OBJECT_TO_POPULATE => $objectToPopulate]);

$this->assertInstanceOf(ObjectOuter::class, $outer);
$inner = $outer->getInner();
$this->assertInstanceOf(ObjectInner::class, $inner);
$this->assertNotSame($objectToPopulate, $inner);
$this->assertSame('bar', $inner->bar);
$this->assertNull($inner->foo);
}

/**
* @dataProvider provideCallbacks
*/
Expand Down Expand Up @@ -936,6 +960,9 @@ class ObjectOuter
{
public $foo;
public $bar;
/**
* @var ObjectInner
*/
private $inner;
private $date;

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