eZ\Publish\Core\REST\Common\Output\FieldTypeSerializer::serializeFieldSettings PHP Method

    public function serializeFieldSettings(Generator $generator, $fieldTypeIdentifier, $settings)
    {
        $fieldType = $this->fieldTypeService->getFieldType($fieldTypeIdentifier);
        $hash = $fieldType->fieldSettingsToHash($settings);
        if ($this->fieldTypeProcessorRegistry->hasProcessor($fieldTypeIdentifier)) {
            $processor = $this->fieldTypeProcessorRegistry->getProcessor($fieldTypeIdentifier);
            $hash = $processor->postProcessFieldSettingsHash($hash);
        }
        $this->serializeHash('fieldSettings', $generator, $hash);
    }

 /**
  * Visit struct returned by controllers.
  *
  * @param \eZ\Publish\Core\REST\Common\Output\Visitor $visitor
  * @param \eZ\Publish\Core\REST\Common\Output\Generator $generator
  * @param \eZ\Publish\API\Repository\Values\ContentType\FieldDefinitionCreateStruct $fieldDefinitionCreateStruct
  */
 public function visit(Visitor $visitor, Generator $generator, $fieldDefinitionCreateStruct)
 {
     $generator->startObjectElement('FieldDefinition');
     $visitor->setHeader('Content-Type', $generator->getMediaType('FieldDefinitionCreateStruct'));
     $generator->startValueElement('identifier', $fieldDefinitionCreateStruct->identifier);
     $generator->endValueElement('identifier');
     $generator->startValueElement('fieldType', $fieldDefinitionCreateStruct->fieldTypeIdentifier);
     $generator->endValueElement('fieldType');
     $generator->startValueElement('fieldGroup', $fieldDefinitionCreateStruct->fieldGroup);
     $generator->endValueElement('fieldGroup');
     $generator->startValueElement('position', $fieldDefinitionCreateStruct->position);
     $generator->endValueElement('position');
     $generator->startValueElement('isTranslatable', $fieldDefinitionCreateStruct->isTranslatable ? 'true' : 'false');
     $generator->endValueElement('isTranslatable');
     $generator->startValueElement('isRequired', $fieldDefinitionCreateStruct->isRequired ? 'true' : 'false');
     $generator->endValueElement('isRequired');
     $generator->startValueElement('isInfoCollector', $fieldDefinitionCreateStruct->isInfoCollector ? 'true' : 'false');
     $generator->endValueElement('isInfoCollector');
     $generator->startValueElement('isSearchable', $fieldDefinitionCreateStruct->isSearchable ? 'true' : 'false');
     $generator->endValueElement('isSearchable');
     $this->fieldTypeSerializer->serializeFieldDefaultValue($generator, $fieldDefinitionCreateStruct->fieldTypeIdentifier, $fieldDefinitionCreateStruct->defaultValue);
     $this->fieldTypeSerializer->serializeFieldSettings($generator, $fieldDefinitionCreateStruct->fieldTypeIdentifier, $fieldDefinitionCreateStruct->fieldSettings);
     $this->fieldTypeSerializer->serializeValidatorConfiguration($generator, $fieldDefinitionCreateStruct->fieldTypeIdentifier, $fieldDefinitionCreateStruct->validatorConfiguration);
     if (!empty($fieldDefinitionCreateStruct->names)) {
         $generator->startHashElement('names');
         $generator->startList('value');
         foreach ($fieldDefinitionCreateStruct->names as $languageCode => $name) {
             $generator->startValueElement('value', $name, array('languageCode' => $languageCode));
             $generator->endValueElement('value');
         }
         $generator->endList('value');
         $generator->endHashElement('names');
     }
     if (!empty($fieldDefinitionCreateStruct->descriptions)) {
         $generator->startHashElement('descriptions');
         $generator->startList('value');
         foreach ($fieldDefinitionCreateStruct->descriptions as $languageCode => $description) {
             $generator->startValueElement('value', $description, array('languageCode' => $languageCode));
             $generator->endValueElement('value');
         }
         $generator->endList('value');
         $generator->endHashElement('descriptions');
     }
     $generator->endObjectElement('FieldDefinition');
 }