User::extractValue

static function extractValue(FieldType $fieldType, array $field, array $request)
{
	$value = parent::extractValue($fieldType, $field, $request);
	$result = null;

	if (is_string($value) && $value !== '')
	{
		$errors = [];
		$result = CBPHelper::usersStringToArray($value, $fieldType->getDocumentType(), $errors);
		if (sizeof($errors) > 0)
		{
			static::addErrors($errors);
		}
	}

	return $result;
}