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[Serializer] add caution for normalize Datetime object with GetSetMethodNormalizer #12825

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Oct 22, 2020
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[Serializer] add caution for normalize Datetime object with GetSetMethodNormalizer #12825

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6 changes: 6 additions & 0 deletions serializer.rst
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Expand Up @@ -115,6 +115,12 @@ Custom normalizers and/or encoders can also be loaded by tagging them as
:ref:`serializer.encoder <reference-dic-tags-serializer-encoder>`. It's also
possible to set the priority of the tag in order to decide the matching order.

.. caution::

Always make sure to load the ``DateTimeNormalizer`` when serializing the
``DateTime`` or ``DateTimeImmutable`` classes to avoid excessive memory
usage and exposing internal details.

Here is an example on how to load the
:class:`Symfony\\Component\\Serializer\\Normalizer\\GetSetMethodNormalizer`, a
faster alternative to the `ObjectNormalizer` when data objects always use
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