Documentation

ObjectNormalizer extends AbstractObjectNormalizer
in package

Application

Converts between objects and arrays using the PropertyAccess component.

Constants

ALLOW_EXTRA_ATTRIBUTES = 'allow_extra_attributes': If ATTRIBUTES are specified, and the source has fields that are not part of that list, either ignore those attributes (true) or throw an ExtraAttributesException (false).
ATTRIBUTES = 'attributes': Limit (de)normalize to the specified names.
CALLBACKS = 'callbacks': Hashmap of field name => callable to (de)normalize this field.
CIRCULAR_REFERENCE_HANDLER = 'circular_reference_handler': Handler to call when a circular reference has been detected.
CIRCULAR_REFERENCE_LIMIT = 'circular_reference_limit': How many loops of circular reference to allow while normalizing.
DEEP_OBJECT_TO_POPULATE = 'deep_object_to_populate': Flag to tell the denormalizer to also populate existing objects on attributes of the main object.
DEFAULT_CONSTRUCTOR_ARGUMENTS = 'default_constructor_arguments': Hashmap of default values for constructor arguments.
DEPTH_KEY_PATTERN = 'depth_%s::%s': How to track the current depth in the context.
DISABLE_TYPE_ENFORCEMENT = 'disable_type_enforcement': While denormalizing, we can verify that types match.
ENABLE_MAX_DEPTH = 'enable_max_depth': Set to true to respect the max depth metadata on fields.
EXCLUDE_FROM_CACHE_KEY = 'exclude_from_cache_key': Specify which context key are not relevant to determine which attributes of an object to (de)normalize.
GROUPS = 'groups': Only (de)normalize attributes that are in the specified groups.
IGNORED_ATTRIBUTES = 'ignored_attributes': Skip the specified attributes when normalizing an object tree.
MAX_DEPTH_HANDLER = 'max_depth_handler': Callback to allow to set a value for an attribute when the max depth has been reached.
OBJECT_TO_POPULATE = 'object_to_populate': Instead of creating a new instance of an object, update the specified object.
PRESERVE_EMPTY_OBJECTS = 'preserve_empty_objects': Flag to control whether an empty object should be kept as an object (in JSON: {}) or converted to a list (in JSON: []).
SKIP_NULL_VALUES = 'skip_null_values': Flag to control whether fields with the value `null` should be output when normalizing or omitted.
SKIP_UNINITIALIZED_VALUES = 'skip_uninitialized_values': Flag to control whether uninitialized PHP>=7.4 typed class properties should be excluded when normalizing.

Properties

$classDiscriminatorResolver : ClassDiscriminatorResolverInterface|null
$classMetadataFactory : ClassMetadataFactoryInterface|null
$defaultContext : mixed
$nameConverter : NameConverterInterface|null
$propertyAccessor : mixed
$serializer : SerializerInterface
$attributesCache : mixed
$discriminatorCache : mixed
$objectClassResolver : mixed
$propertyTypeExtractor : mixed
$typesCache : mixed

Methods

__construct() : mixed: Sets the {@link ClassMetadataFactoryInterface} to use.
denormalize() : mixed: {@inheritdoc}
hasCacheableSupportsMethod() : bool: {@inheritdoc}
normalize() : mixed: {@inheritdoc}
setSerializer() : mixed
supportsDenormalization() : mixed: {@inheritdoc}
supportsNormalization() : mixed: {@inheritdoc}
applyCallbacks() : mixed
extractAttributes() : array<string|int, string>: Extracts attributes to normalize from the class of the given object, format and context.
extractObjectToPopulate() : object|null: Extract the `object_to_populate` field from the context if it exists and is an instance of the provided $class.
getAllowedAttributes() : array<string|int, mixed>|bool: {@inheritdoc}
getAttributes() : array<string|int, string>: Gets and caches attributes for the given object, format and context.
getAttributeValue() : mixed: Gets the attribute value.
getConstructor() : ReflectionMethod|null: Returns the method to use to construct an object. This method must be either the object constructor or static.
getGroups() : array<string|int, mixed>
handleCircularReference() : mixed: Handles a circular reference.
instantiateObject() : object: Instantiates an object using constructor parameters when needed.
isAllowedAttribute() : bool: Is this attribute allowed?
isCircularReference() : bool: Detects if the configured circular reference limit is reached.
prepareForDenormalization() : array<string|int, mixed>: Normalizes the given data to an array. It's particularly useful during the denormalization process.
setAttributeValue() : mixed: Sets attribute value.
validateCallbackContext() : void: Validate callbacks set in context.
getAttributeDenormalizationContext() : array<string|int, mixed>: Computes the denormalization context merged with current one. Metadata always wins over global context, as more specific.
getAttributeMetadata() : AttributeMetadataInterface|null
getAttributeNormalizationContext() : array<string|int, mixed>: Computes the normalization context merged with current one. Metadata always wins over global context, as more specific.
getCacheKey() : bool|string: Builds the cache key for the attributes cache.
getTypes() : array<string|int, Type>|null
isMaxDepthReached() : bool: Is the max depth reached for the given attribute?
isUninitializedValueError() : bool: This error may occur when specific object normalizer implementation gets attribute value by accessing a public uninitialized property or by calling a method accessing such property.
updateData() : array<string|int, mixed>: Sets an attribute and apply the name converter if necessary.
validateAndDenormalize() : mixed: Validates the submitted data and denormalizes it.

ALLOW_EXTRA_ATTRIBUTES

If ATTRIBUTES are specified, and the source has fields that are not part of that list, either ignore those attributes (true) or throw an ExtraAttributesException (false).


    public
        mixed
    ALLOW_EXTRA_ATTRIBUTES
    = 'allow_extra_attributes'

ATTRIBUTES

Limit (de)normalize to the specified names.


    public
        mixed
    ATTRIBUTES
    = 'attributes'

For nested structures, this list needs to reflect the object tree.

CALLBACKS

Hashmap of field name => callable to (de)normalize this field.


    public
        mixed
    CALLBACKS
    = 'callbacks'

The callable is called if the field is encountered with the arguments:

mixed $attributeValue value of this field
object|string $object the whole object being normalized or the object's class being denormalized
string $attributeName name of the attribute being (de)normalized
string $format the requested format
array $context the serialization context

CIRCULAR_REFERENCE_HANDLER

Handler to call when a circular reference has been detected.


    public
        mixed
    CIRCULAR_REFERENCE_HANDLER
    = 'circular_reference_handler'

If you specify no handler, a CircularReferenceException is thrown.

The method will be called with ($object, $format, $context) and its return value is returned as the result of the normalize call.

CIRCULAR_REFERENCE_LIMIT

How many loops of circular reference to allow while normalizing.


    public
        mixed
    CIRCULAR_REFERENCE_LIMIT
    = 'circular_reference_limit'

The default value of 1 means that when we encounter the same object a second time, we consider that a circular reference.

You can raise this value for special cases, e.g. in combination with the max depth setting of the object normalizer.

DEEP_OBJECT_TO_POPULATE

Flag to tell the denormalizer to also populate existing objects on attributes of the main object.


    public
        mixed
    DEEP_OBJECT_TO_POPULATE
    = 'deep_object_to_populate'

Setting this to true is only useful if you also specify the root object in OBJECT_TO_POPULATE.

DEFAULT_CONSTRUCTOR_ARGUMENTS

Hashmap of default values for constructor arguments.


    public
        mixed
    DEFAULT_CONSTRUCTOR_ARGUMENTS
    = 'default_constructor_arguments'

The names need to match the parameter names in the constructor arguments.

DEPTH_KEY_PATTERN

How to track the current depth in the context.


    public
        mixed
    DEPTH_KEY_PATTERN
    = 'depth_%s::%s'

DISABLE_TYPE_ENFORCEMENT

While denormalizing, we can verify that types match.


    public
        mixed
    DISABLE_TYPE_ENFORCEMENT
    = 'disable_type_enforcement'

You can disable this by setting this flag to true.

ENABLE_MAX_DEPTH

Set to true to respect the max depth metadata on fields.


    public
        mixed
    ENABLE_MAX_DEPTH
    = 'enable_max_depth'

EXCLUDE_FROM_CACHE_KEY

Specify which context key are not relevant to determine which attributes of an object to (de)normalize.


    public
        mixed
    EXCLUDE_FROM_CACHE_KEY
    = 'exclude_from_cache_key'

GROUPS

Only (de)normalize attributes that are in the specified groups.


    public
        mixed
    GROUPS
    = 'groups'

IGNORED_ATTRIBUTES

Skip the specified attributes when normalizing an object tree.


    public
        mixed
    IGNORED_ATTRIBUTES
    = 'ignored_attributes'

This list is applied to each element of nested structures.

Note: The behaviour for nested structures is different from ATTRIBUTES for historical reason. Aligning the behaviour would be a BC break.

MAX_DEPTH_HANDLER

Callback to allow to set a value for an attribute when the max depth has been reached.


    public
        mixed
    MAX_DEPTH_HANDLER
    = 'max_depth_handler'

If no callback is given, the attribute is skipped. If a callable is given, its return value is used (even if null).

The arguments are:

mixed $attributeValue value of this field
object $object the whole object being normalized
string $attributeName name of the attribute being normalized
string $format the requested format
array $context the serialization context

OBJECT_TO_POPULATE

Instead of creating a new instance of an object, update the specified object.


    public
        mixed
    OBJECT_TO_POPULATE
    = 'object_to_populate'

If you have a nested structure, child objects will be overwritten with new instances unless you set DEEP_OBJECT_TO_POPULATE to true.

PRESERVE_EMPTY_OBJECTS

Flag to control whether an empty object should be kept as an object (in JSON: {}) or converted to a list (in JSON: []).


    public
        mixed
    PRESERVE_EMPTY_OBJECTS
    = 'preserve_empty_objects'

SKIP_NULL_VALUES

Flag to control whether fields with the value `null` should be output when normalizing or omitted.


    public
        mixed
    SKIP_NULL_VALUES
    = 'skip_null_values'

SKIP_UNINITIALIZED_VALUES

Flag to control whether uninitialized PHP>=7.4 typed class properties should be excluded when normalizing.


    public
        mixed
    SKIP_UNINITIALIZED_VALUES
    = 'skip_uninitialized_values'

$classDiscriminatorResolver


    protected
        ClassDiscriminatorResolverInterface|null
    $classDiscriminatorResolver

$classMetadataFactory


    protected
        ClassMetadataFactoryInterface|null
    $classMetadataFactory

$defaultContext


    protected
        mixed
    $defaultContext
     = [self::ALLOW_EXTRA_ATTRIBUTES => true, self::CIRCULAR_REFERENCE_HANDLER => null, self::CIRCULAR_REFERENCE_LIMIT => 1, self::IGNORED_ATTRIBUTES => []]

$nameConverter


    protected
        NameConverterInterface|null
    $nameConverter

$propertyAccessor


    protected
        mixed
    $propertyAccessor

$serializer


    protected
        SerializerInterface
    $serializer

$attributesCache


    private
        mixed
    $attributesCache
     = []

$discriminatorCache


    private
        mixed
    $discriminatorCache
     = []

$objectClassResolver


    private
        mixed
    $objectClassResolver

$propertyTypeExtractor


    private
        mixed
    $propertyTypeExtractor

$typesCache


    private
        mixed
    $typesCache
     = []

__construct()

Sets the {@link ClassMetadataFactoryInterface} to use.


    public
                    __construct([ClassMetadataFactoryInterface $classMetadataFactory = null ][, NameConverterInterface $nameConverter = null ][, PropertyAccessorInterface $propertyAccessor = null ][, PropertyTypeExtractorInterface $propertyTypeExtractor = null ][, ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null ][, callable $objectClassResolver = null ][, array<string|int, mixed> $defaultContext = [] ]) : mixed

Parameters

$classMetadataFactory : ClassMetadataFactoryInterface = null
$nameConverter : NameConverterInterface = null
$propertyAccessor : PropertyAccessorInterface = null
$propertyTypeExtractor : PropertyTypeExtractorInterface = null
$classDiscriminatorResolver : ClassDiscriminatorResolverInterface = null
$objectClassResolver : callable = null
$defaultContext : array<string|int, mixed> = []

denormalize()

{@inheritdoc}


    public
                    denormalize(mixed $data, string $type[, string $format = null ][, array<string|int, mixed> $context = [] ]) : mixed

Parameters

$data : mixed
$type : string
$format : string = null
$context : array<string|int, mixed> = []

hasCacheableSupportsMethod()

{@inheritdoc}


    public
                    hasCacheableSupportsMethod() : bool

Return values

bool

normalize()

{@inheritdoc}


    public
                    normalize(mixed $object[, string $format = null ][, array<string|int, mixed> $context = [] ]) : mixed

Parameters

$object : mixed
$format : string = null
$context : array<string|int, mixed> = []

setSerializer()


    public
                    setSerializer(SerializerInterface $serializer) : mixed

Parameters

$serializer : SerializerInterface

supportsDenormalization()

{@inheritdoc}


    public
                    supportsDenormalization(mixed $data, string $type[, string $format = null ]) : mixed

Parameters

$data : mixed
$type : string
$format : string = null

supportsNormalization()

{@inheritdoc}


    public
                    supportsNormalization(mixed $data[, string $format = null ]) : mixed

Parameters

$data : mixed
$format : string = null

applyCallbacks()


    protected
        final            applyCallbacks(mixed $value, object|string $object, string $attribute, string|null $format, array<string|int, mixed> $context) : mixed

Parameters

$value : mixed
$object : object|string
$attribute : string
$format : string|null
$context : array<string|int, mixed>

extractAttributes()

Extracts attributes to normalize from the class of the given object, format and context.


    protected
                    extractAttributes(object $object[, string $format = null ][, array<string|int, mixed> $context = [] ]) : array<string|int, string>

Parameters

$object : object
$format : string = null
$context : array<string|int, mixed> = []

Return values

array<string|int, string>

extractObjectToPopulate()

Extract the `object_to_populate` field from the context if it exists and is an instance of the provided $class.


    protected
                    extractObjectToPopulate(string $class, array<string|int, mixed> $context[, string|null $key = null ]) : object|null

Parameters

$class : string: The class the object should be
$context : array<string|int, mixed>
$key : string|null = null: They in which to look for the object to populate. Keeps backwards compatibility with AbstractNormalizer.

Return values

object|null

getAllowedAttributes()

{@inheritdoc}


    protected
                    getAllowedAttributes(string|object $classOrObject, array<string|int, mixed> $context[, bool $attributesAsString = false ]) : array<string|int, mixed>|bool

Parameters

$classOrObject : string|object
$context : array<string|int, mixed>
$attributesAsString : bool = false

Return values

array<string|int, mixed>|bool

getAttributes()

Gets and caches attributes for the given object, format and context.


    protected
                    getAttributes(object $object, string|null $format, array<string|int, mixed> $context) : array<string|int, string>

Parameters

$object : object
$format : string|null
$context : array<string|int, mixed>

Return values

array<string|int, string>

getAttributeValue()

Gets the attribute value.


    protected
                    getAttributeValue(object $object, string $attribute[, string $format = null ][, array<string|int, mixed> $context = [] ]) : mixed

Parameters

$object : object
$attribute : string
$format : string = null
$context : array<string|int, mixed> = []

getConstructor()

Returns the method to use to construct an object. This method must be either the object constructor or static.


    protected
                    getConstructor(array<string|int, mixed> &$data, string $class, array<string|int, mixed> &$context, ReflectionClass $reflectionClass, array<string|int, mixed>|bool $allowedAttributes) : ReflectionMethod|null

Parameters

$data : array<string|int, mixed>
$class : string
$context : array<string|int, mixed>
$reflectionClass : ReflectionClass
$allowedAttributes : array<string|int, mixed>|bool

Return values

ReflectionMethod|null

getGroups()


    protected
                    getGroups(array<string|int, mixed> $context) : array<string|int, mixed>

Parameters

$context : array<string|int, mixed>

Return values

array<string|int, mixed>

handleCircularReference()

Handles a circular reference.


    protected
                    handleCircularReference(object $object[, string $format = null ][, array<string|int, mixed> $context = [] ]) : mixed

If a circular reference handler is set, it will be called. Otherwise, a CircularReferenceException will be thrown.

Parameters

$object : object
$format : string = null
$context : array<string|int, mixed> = []

instantiateObject()

Instantiates an object using constructor parameters when needed.


    protected
                    instantiateObject(array<string|int, mixed> &$data, string $class, array<string|int, mixed> &$context, ReflectionClass $reflectionClass, array<string|int, mixed>|bool $allowedAttributes[, string $format = null ]) : object

This method also allows to denormalize data into an existing object if it is present in the context with the object_to_populate. This object is removed from the context before being returned to avoid side effects when recursively normalizing an object graph.

Parameters

$data : array<string|int, mixed>
$class : string
$context : array<string|int, mixed>
$reflectionClass : ReflectionClass
$allowedAttributes : array<string|int, mixed>|bool
$format : string = null

Return values

object

isAllowedAttribute()

Is this attribute allowed?


    protected
                    isAllowedAttribute(object|string $classOrObject, string $attribute[, string $format = null ][, array<string|int, mixed> $context = [] ]) : bool

Parameters

$classOrObject : object|string
$attribute : string
$format : string = null
$context : array<string|int, mixed> = []

Return values

bool

isCircularReference()

Detects if the configured circular reference limit is reached.


    protected
                    isCircularReference(object $object, array<string|int, mixed> &$context) : bool

Parameters

$object : object
$context : array<string|int, mixed>

Return values

bool

prepareForDenormalization()

Normalizes the given data to an array. It's particularly useful during the denormalization process.


    protected
                    prepareForDenormalization(mixed $data) : array<string|int, mixed>

Parameters

$data : mixed

Return values

array<string|int, mixed>

setAttributeValue()

Sets attribute value.


    protected
                    setAttributeValue(object $object, string $attribute, mixed $value[, string $format = null ][, array<string|int, mixed> $context = [] ]) : mixed

Parameters

$object : object
$attribute : string
$value : mixed
$format : string = null
$context : array<string|int, mixed> = []

validateCallbackContext()

Validate callbacks set in context.


    protected
        final            validateCallbackContext(array<string|int, mixed> $context[, string $contextType = '' ]) : void

Parameters

$context : array<string|int, mixed>
$contextType : string = '': Used to specify which context is invalid in exceptions

getAttributeDenormalizationContext()

Computes the denormalization context merged with current one. Metadata always wins over global context, as more specific.


    private
                    getAttributeDenormalizationContext(string $class, string $attribute, array<string|int, mixed> $context) : array<string|int, mixed>

Parameters

$class : string
$attribute : string
$context : array<string|int, mixed>

Return values

array<string|int, mixed>

getAttributeMetadata()


    private
                    getAttributeMetadata(object|string $objectOrClass, string $attribute) : AttributeMetadataInterface|null

Parameters

$objectOrClass : object|string
$attribute : string

Return values

AttributeMetadataInterface|null

getAttributeNormalizationContext()

Computes the normalization context merged with current one. Metadata always wins over global context, as more specific.


    private
                    getAttributeNormalizationContext(object $object, string $attribute, array<string|int, mixed> $context) : array<string|int, mixed>

Parameters

$object : object
$attribute : string
$context : array<string|int, mixed>

Return values

array<string|int, mixed>

getCacheKey()

Builds the cache key for the attributes cache.


    private
                    getCacheKey(string|null $format, array<string|int, mixed> $context) : bool|string

The key must be different for every option in the context that could change which attributes should be handled.

Parameters

$format : string|null
$context : array<string|int, mixed>

Return values

bool|string

getTypes()


    private
                    getTypes(string $currentClass, string $attribute) : array<string|int, Type>|null

Parameters

$currentClass : string
$attribute : string

Return values

array<string|int, Type>|null

isMaxDepthReached()

Is the max depth reached for the given attribute?


    private
                    isMaxDepthReached(array<string|int, AttributeMetadataInterface> $attributesMetadata, string $class, string $attribute, array<string|int, mixed> &$context) : bool

Parameters

$attributesMetadata : array<string|int, AttributeMetadataInterface>
$class : string
$attribute : string
$context : array<string|int, mixed>

Return values

bool

isUninitializedValueError()

This error may occur when specific object normalizer implementation gets attribute value by accessing a public uninitialized property or by calling a method accessing such property.


    private
                    isUninitializedValueError(Error $e) : bool

Parameters

$e : Error

Return values

bool

updateData()

Sets an attribute and apply the name converter if necessary.


    private
                    updateData(array<string|int, mixed> $data, string $attribute, mixed $attributeValue, string $class, string|null $format, array<string|int, mixed> $context) : array<string|int, mixed>

Parameters

$data : array<string|int, mixed>
$attribute : string
$attributeValue : mixed
$class : string
$format : string|null
$context : array<string|int, mixed>

Return values

array<string|int, mixed>

validateAndDenormalize()

Validates the submitted data and denormalizes it.


    private
                    validateAndDenormalize(array<string|int, Type> $types, string $currentClass, string $attribute, mixed $data, string|null $format, array<string|int, mixed> $context) : mixed

Parameters

$types : array<string|int, Type>
$currentClass : string
$attribute : string
$data : mixed
$format : string|null
$context : array<string|int, mixed>

ObjectNormalizer extends AbstractObjectNormalizer in package Application

Tags

Table of Contents

Constants

Properties

Methods

Constants

ALLOW_EXTRA_ATTRIBUTES

ATTRIBUTES

CALLBACKS

CIRCULAR_REFERENCE_HANDLER

CIRCULAR_REFERENCE_LIMIT

DEEP_OBJECT_TO_POPULATE

DEFAULT_CONSTRUCTOR_ARGUMENTS

DEPTH_KEY_PATTERN

DISABLE_TYPE_ENFORCEMENT

ENABLE_MAX_DEPTH

EXCLUDE_FROM_CACHE_KEY

GROUPS

IGNORED_ATTRIBUTES

MAX_DEPTH_HANDLER

OBJECT_TO_POPULATE

PRESERVE_EMPTY_OBJECTS

SKIP_NULL_VALUES

SKIP_UNINITIALIZED_VALUES

Properties

$classDiscriminatorResolver

$classMetadataFactory

$defaultContext

$nameConverter

$propertyAccessor

$serializer

$attributesCache

$discriminatorCache

$objectClassResolver

$propertyTypeExtractor

$typesCache

Methods

__construct()

Parameters

denormalize()

Parameters

hasCacheableSupportsMethod()

Return values

normalize()

Parameters

setSerializer()

Parameters

supportsDenormalization()

Parameters

supportsNormalization()

Parameters

applyCallbacks()

Parameters

extractAttributes()

Parameters

Return values

extractObjectToPopulate()

Parameters

Return values

getAllowedAttributes()

Parameters

Return values

getAttributes()

Parameters

Return values

getAttributeValue()

Parameters

getConstructor()

Parameters

Return values

getGroups()

Parameters

Return values

handleCircularReference()

Parameters

Tags

instantiateObject()

Parameters

Tags

ObjectNormalizer extends AbstractObjectNormalizer
in package

Application