Symfony skip null value during serialization

Question

Im trying to serialize an object and skipping null value this is the object i try to serialize:

{
  key1: null
  key2: null
  key3: {
     keyA: null
     keyB: 'value'
  }
  key4: 'value'
}

if i use the following method :

$object = self::getInstance()->serialize($object, "json", ['skip_null_values' => true]);

the object is succesfully serialized but it only remove the null key of the first level and not the one from the key3 object.

{
  key3: {
     keyA: null
     keyB: 'value'
  }
  key4: 'value'
}

Is there any way to achieve this using the Symfony Serializer Component ?

jawira · Accepted Answer · 2023-03-06 16:29:13Z

3

You can use AbstractObjectNormalizer::SKIP_NULL_VALUES flag to skip null values when normalizing:

$json = $serializer->serialize(
    $user,
    JsonEncoder::FORMAT,
    [AbstractObjectNormalizer::SKIP_NULL_VALUES => true]
);

Source: https://lindevs.com/skip-null-values-during-serialization-in-symfony/

answered Mar 6, 2023 at 16:29

jawira

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habibun · Accepted Answer · 2019-04-20 11:26:07Z

-1

You can consider JMSSerializerBundle instead of Symfony serializer

it's easy to use. You can serialize nulls as empty strings

$context = new SerializationContext();
$context->setSerializeNull(true);
$objectData = $serializer->serialize($object, 'json', $context);

answered Apr 20, 2019 at 11:26

habibun

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Lorenzo Prodon · Accepted Answer · 2021-05-03 10:59:23Z

-1

You can use the context to pass setSerializeNull(true)

use FOS\RestBundle\Context\Context;

in your function:

$data = ...
$view = $this->view($data, 200);

$context = new Context();
$context->setSerializeNull(true);
$view->setContext($context);

return $this->handleView($view);

answered May 3, 2021 at 10:59

Lorenzo Prodon

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1 Comment

Cethy Over a year ago

OP use symfony/serializer, not JMS/serializer

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