How to convert enum to QString?

Question

You need to use Q_ENUM macro, which registers an enum type with the meta-object system.

enum AppleType {
  Big,
  Small
};
Q_ENUM(AppleType)

And now you can use the QMetaEnum class to access meta-data about an enumerator.

QMetaEnum metaEnum = QMetaEnum::fromType<ModelApple::AppleType>();
qDebug() << metaEnum.valueToKey(ModelApple::Big);

Here is a generic template for such utility:

template<typename QEnum>
std::string QtEnumToString (const QEnum value)
{
  return std::string(QMetaEnum::fromType<QEnum>().valueToKey(value));
}