Deserializing local NSString of JSON into objects via RestKit (no network download)

Question

Is it possible to deserialize an NSString of JSON into objects via RestKit? I checked the API list here and could not find something that would serve for this p

Answer 1

For Restkit 0.22, You can use this code. This returns an RKMappingResult wherein you can enumerate the objects after mapping using the property .array.

- (RKMappingResult *)mapJSONStringWithString:(NSString *)jsonString
{
     RKMappingResult *result = nil;

     NSError* error;
     NSData *data = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
     id parsedData = [RKMIMETypeSerialization objectFromData:data MIMEType:RKMIMETypeJSON error:&error];
     if (parsedData == nil && error) {
        NSLog(@"json mapping error");
     }

     NSDictionary *mappingsDictionary = @{@"":[CustomMappingClass getMappingForUsers]};

     ObjectClass *obj = [ObjectClass new];
     RKMapperOperation *mapper = [[RKMapperOperation alloc] initWithRepresentation:parsedData mappingsDictionary:mappingsDictionary];
     NSError *mappingError = nil;
     mapper.targetObject = obj;
     BOOL isMapped = [mapper execute:&mappingError];
     if (isMapped && !mappingError) {
         result = [mapper mappingResult];
     }

    return result;
}