/**
* Transforms the value if a value transformer is set.
*
* @param mixed $value
* @param FieldConfigInterface $field
*
* @return string
*/
protected function normToView($value, FieldConfigInterface $field) : string
{
// Scalar values should be converted to strings to
// facilitate differentiation between empty ("") and zero (0).
if (null === $value || !$field->getViewTransformers()) {
if (null !== $value && !is_scalar($value)) {
throw new \RuntimeException(sprintf('Norm value of type %s is not a scalar value or null and not cannot be ' . 'converted to a string. You must set a viewTransformer for field "%s" with type "%s".', gettype($value), $field->getName(), $field->getType()->getName()));
}
return (string) $value;
}
foreach ($field->getViewTransformers() as $transformer) {
$value = $transformer->transform($value);
}
return (string) $value;
}
/**
* Checks if the given field accepts the given value-type.
*
* @param FieldConfigInterface $fieldConfig
* @param string $type
*
* @throws UnsupportedValueTypeException
*
* @deprecated
*/
protected function assertAcceptsType(FieldConfigInterface $fieldConfig, $type)
{
if (!$fieldConfig->supportValueType($type)) {
throw new UnsupportedValueTypeException($fieldConfig->getName(), $type);
}
}
