How to convert a part of Json object into a string?

[aryamansingh2008]

If I have a class which parses the json into custom class, but I want some part of JSON to be extracted out as string, how can I achieve this using custom Type Handler?

E.g.

{
  "type": 1,
  "value": {
    "someField": "someValue",
    "someOtherField": "someOtherValue"
  }
}

Now, I have a class like

class SomeDTO {
public:
    int type;
    std::string value;
}

I want to convert the Json into SomeDTO.
I don't want to store the JSON like

{
  "type": 1,
  "value": "{\"someField\": \"someValue\",\"someOtherField\": \"someOtherValue\"}"
}

I am trying to create a custom TypeHandler like this, but I am unsure if this is even achievable

static Error to(sherlock::SomeDTO& someDTO, ParseContext& context) {
        // simply get someDTO.type value
        
        // for getting string value of someDTO.value field
        JS::JsonObject rawJson;
        if (context.token.value_type != JS::Type::ObjectStart)
        return Error::ExpectedObjectStart;
        
        context.tokenizer.copyFromValue(context.token, rawJson.data);
        
        size_t level = 1;
        Error error = Error::NoError;
        while (error == JS::Error::NoError && level)
        {
        error = context.nextToken();
        if (context.token.value_type == Type::ObjectStart)
	        level++;
        else if (context.token.value_type == Type::ObjectEnd)
	        level--;
        }
        
        context.tokenizer.copyIncludingValue(context.token, rawJson.data);
        
        std::string json = rawJson.data;
        someDTO.value = json;
}

[jorgen]

Hi, I think this is possible with the JS::JsonObject type. I have written a small sample here: https://godbolt.org/z/6vaabqcqx
Please let me know if this is what you where looking for?