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Serializer

The Bdf Serializer can normalize, hydrate / extract and encode data or object. It use doctrine/instantiator for instancing class and phpdocumentor for reading annotations.

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Installation with Composer

composer require b2p/bdf-serializer

Basic usage

<?php

use Bdf\Serializer\SerializerBuilder;

$serializer = SerializerBuilder::create()->build();
$json = $serializer->toJson($object);
//...

Declare metadata

2 drivers are available. The static method called and the annotations driver.

Static method driver

Declare your static method to build metadata

<?php

use Bdf\Serializer\Metadata\Builder\ClassMetadataBuilder;
use DateTime;

class User
{
    /**
     * @var integer
     */
    private $id;
    
    /**
     * @var string
     */
    private $name;
    
    /**
     * @var DateTime
     */
    private $date;
    
    /**
     * @param ClassMetadataBuilder $builder
     */
    public static function loadSerializerMetadata($builder)
    {
        $builder->integer('id');
        $builder->string('name');
        
        // You can also add group, alias, ...
        $builder->string('name')
            ->addGroup('all')
            ->alias('user_name')
            ->since('1.0.0');
            
        // DateTime options are available
        $builder->dateTime('date')
            ->dateFormat('Y/m/d H:i')
            ->timezone('+01:00')      // Use this timezone in internal
            ->toTimezone('+00:00');   // Export date with this timezone
    }
}

Annotations driver

The annotations driver use phpdocumentor/reflection-docblock. The tag @var will be read. If no tag is found, the default type is string.

Supported tags

  • var: This annotation specify the type of the property. This tag is mandatory for deserialization.
  • since: Enable object versionning. The value specify starting from which version this property is available.
  • until: Enable object versionning. The value specify until which version this property was available.
  • SerializeIgnore: Don't serialize this property.

NOTE: If type has not been detected in the phpdoc we try to add the typed property value added in PHP 7.4

JMS/serializer driver

The driver Bdf\Serializer\Metadata\Driver\JMSAnnotationDriver allows you to use JMS drivers. The JMS metadata will be used to create Bdf metadata. Only few options of the serializer is used:

  • serializedName
  • readOnly
  • inline
  • sinceVersion
  • untilVersion
  • getter
  • setter
  • groups
  • type

NOTE: The driver works with jms/serializer > v3.0 and php > v7.2

<?php

use Bdf\Serializer\Metadata\Driver\JMSAnnotationDriver;
use JMS\Serializer\Metadata\Driver\AnnotationDriver as BaseJMSAnnotationDriver;

$driver = new JMSAnnotationDriver(new BaseJMSAnnotationDriver(...));

Serialization options

The NormalizationContext contains options for normalization.

  • exclude: Properties to exclude from normalization .
  • include: Properties to include from normalization.
  • groups: Groups of properties to include.
  • null: Null value will be added if true.
  • meta_type: Include the metadata "@type" in the payload.
  • version: Set the version for object that support versionning serialization.The string version should be compatible with PHP function version_compare.
  • circular_reference_limit: Number of circular reference. Default 1.
  • remove_default_value: Don't inject the value of a property if it is set to its default value.

Date time options

  • dateFormat: Normalization option to specify the format.
  • dateTimezone: Use the given timezone to format date.
  • timezoneHint: Denormalization option to help to detect the timezone from input string.

Available option for NormalizationContext and DenormalizationContext.

  • throws_on_accessor_error: By default a value is skipped if an Error is thrown when writting or reading on a property. This option will throw error from accessor (debug purpose).

Exemple:

<?php

use \Bdf\Serializer\Context\NormalizationContext;

$object = (object)[
    "name" => "John",
    "age"  => null,
];

$builder = new \Bdf\Serializer\SerializerBuilder();
$builder->setNormalizers([new \Bdf\Serializer\Normalizer\ObjectNormalizer()]);

$serializer = $builder->build();
echo $serializer->toJson($object);
// {"name":"John"}

echo $serializer->toJson($object, [NormalizationContext::NULL => true]);
// {"name":"John","age":null}

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A basic but powerful PHP serializer

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