Have TouchJSON return mutable objects?

I am receiving some json from a web service. I parse this using the TouchJSON library.
I keep the data around for the user to change certain values and then I want to return it to the web service.

The JSON object I get contains NSDictionary Objects within the object, like this:

  • TouchJSON, dealing with NSNull
  • [
            "id": null,
            "created_at": 12332343,
            "object": {
                "name": "Some name",
                "age" : 30 
            "scope": "it stuff",
            "kind_id": 1,
            "valid": true,
            "refering_statement": {
                "id": 95 
            "user": {
                "id": 1 

    If I want to change values in this dictionary, I can’t because the returned objects from TouchJSON are not mutable.

    Is there a way to have have TouchJSON return mutable objects?

    or is there a way to have Objective C make an NSDictionary and all its children mutable?

    or do I have to just go through every NSDictionary in NSDictionary and copy all data into a mutable copy and then reinsert everything?

    Hope someone can help me out on this one:) thanks in advance.

    2 Solutions Collect From Internet About “Have TouchJSON return mutable objects?”

    TouchJson has an option to return mutable object rather than normal. (I found it by looking at source code.) Default is to return its “copy”, not “mutablecopy”.

    NSError *error = nil;    
    jsonString = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:&error];
    NSData *jsonData = [jsonString dataUsingEncoding:NSUTF32BigEndianStringEncoding];
    CJSONDeserializer *jsondeserializer = [CJSONDeserializer deserializer];
    jsondeserializer.scanner.options = kJSONScannerOptions_MutableContainers;
    NSMutableDictionary *jsonitems = [[NSMutableDictionary alloc] initWithDictionary:[jsondeserializer deserializeAsDictionary:jsonData error:&error]];

    You can create a mutable dictionary from a dictionary like this.

    (assuming your json parsed dictionary was named jsonDictionary)

    NSMutableDictionary *userDictionary = [NSMutableDictionary dictionaryWithDictionary:jsonDictionary];

    Hope that solves it for you.