Attachment::attach

static function attach($ownerId, int $fileId, array $parameters = [])
{
	global $USER_FIELD_MANAGER;

	$ownerId = Assert::expectStringNotNull($ownerId, '$ownerId');
	$parameters['USER_ID'] = Assert::expectIntegerPositive($parameters['USER_ID'], '$parameters[USER_ID]');
	$parameters['ENTITY_ID'] = Assert::expectStringNotNull($parameters['ENTITY_ID'], '$parameters[ENTITY_ID]');
	$parameters['FIELD_NAME'] = Assert::expectStringNotNull($parameters['FIELD_NAME'], '$parameters[FIELD_NAME]');

	$currentValue = static::getValue($ownerId, $parameters['ENTITY_ID'], $parameters['FIELD_NAME']);
	$currentValue[] = FileUserType::NEW_FILE_PREFIX . $fileId;
	$fields = [$parameters['FIELD_NAME'] => $currentValue];

	if ($USER_FIELD_MANAGER->CheckFields($parameters['ENTITY_ID'], $ownerId, $fields))
	{
		$USER_FIELD_MANAGER->Update($parameters['ENTITY_ID'], $ownerId, $fields, $parameters['USER_ID']);

		return static::getIdByFileId($fileId, $ownerId, $parameters['ENTITY_ID'], $parameters['FIELD_NAME']);
	}

	return false;
}