private function normToView($value)
    {
        // Scalar values should  be converted to strings to
        // facilitate differentiation between empty ("") and zero (0).
        // Only do this for simple forms, as the resulting value in
        // compound forms is passed to the data mapper and thus should
        // not be converted to a string before.
        if (!$this->config->getViewTransformers()) {
            return null === $value || is_scalar($value) ? (string) $value : $value;
        }

        foreach ($this->config->getViewTransformers() as $transformer) {
            $value = $transformer->transform($value);
        }

        return $value;
    }