Contributed by Maxime Steinhausser in #39399.

The Serializer component provides a mechanism to configure the way data is serialized/deserialized: the context options. These options are passed as an optional argument of the serialize/deserialize methods. In Symfony 5.3 we’ve improved the serializer so you can define the context as part of the mapping information thanks to a new Serializer\Context annotation/attribute. For example, to define how some datetime property should be formatted, use the following: 1 2 3 4 5 6 7 8 9 10 11 12 13 14use Symfony\Component\Serializer\Annotation as Serializer; use Symfony\Component\Serializer\Normalizer\DateTimeNormalizer;

class SomeClass { /**

• @Serializer\Context({ DateTimeNormalizer::FORMAT_KEY = 'Y-m-d' }) */ public \DateTime $date;

  // In PHP 8 applications you can use PHP attributes instead:

  [Serializer\Context([DateTimeNormalizer::FORMAT_KEY => 'Y-m-d'])]

  public \DateTime $date; }

The annotation/attribute supports different contexts for normalization/denormalization and it can also define serialization groups: 1 2 3 4 5 6 7 8 9 10 11#[Serializer\Context( normalizationContext: [DateTimeNormalizer::FORMAT_KEY => 'Y-m-d'], denormalizationContext: [DateTimeNormalizer::FORMAT_KEY => \DateTime::COOKIE] )] public \DateTime $date;

[Serializer\Context(

normalizationContext: [DateTimeNormalizer::FORMAT_KEY => \DateTime::RFC3339],
groups: ['extended']

)] public \DateTime $date;

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http://feedproxy.google.com/~r/symfony/blog/~3/ZHkZkGEe9MU/new-in-symfony-5-3-inlined-serialization-context