RestKit 0.20 - Dynamic nested object mapping - objective-c

Question

I'm working on Objective C project, that uses RestKit framework for parsing JSON responses.
Now I need some help with object mapping settings for following case:
JSON response:
{
"data": {
"SOME.API.Auth": {
"maxVersion": 2,
"minVersion": 1,
"path": "auth.cgi"
},
"SOME.Station": {
"maxVersion": 1,
"minVersion": 1,
"path": "Station/task.cgi"
}
},
"success": true
}
and following objects:
#interface Response : NSObject
#property (strong, nonatomic) NSArray *data;
#property (assign, nonatomic) BOOL success;
#end
#interface SomeAPIInfo : NSObject
#property (strong, nonatomic) NSString *name;
#property (strong, nonatomic) NSString *path;
#property (strong, nonatomic) NSString *minVersion;
#property (strong, nonatomic) NSString *maxVersion;
#end
And here is my mapping settings:
RKObjectMapping *responseMapping = [RKObjectMapping mappingForClass:[Response class]];
[responseMapping addAttributeMappingsFromDictionary:#{#"success": #"success"}];
RKObjectMapping *dataObjectMapping = [RKObjectMapping mappingForClass:[SomeAPIInfo class]];
dataObjectMapping.forceCollectionMapping = YES;
[dataObjectMapping addAttributeMappingFromKeyOfRepresentationToAttribute:#"name"];
[dataObjectMapping addAttributeMappingsFromDictionary:#{
#"(name).path": #"path",
#"(name).minVersion": #"minVersion",
#"(name).maxVersion": #"maxVersion"}];
[responseMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:#"data"
toKeyPath:#"data"
withMapping:dataObjectMapping]];
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping
pathPattern:nil
keyPath:nil
statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
[_objectManager addResponseDescriptor:responseDescriptor];
Problem is that "data" object is not properly mapped:
NSArray *data;
is filled with 2 "SomeAPIInfo" objects. name is properly filled, but other values(path,maxVersion,minVersion) are empty.
What am I doing wrong ?
Is there another way to map "data" object ? Maybe directly into NSDictionary, so "Some.API.Auth" would be key and "SomeAPIInfo" would be object (without "name" property).
Thanks for help!
Edit: I think that the mapping doesn't work because of the dots in key ("SOME.API.Auth).
RKMappingOperation.m:
- (NSArray *)simpleAttributeMappings
{
NSMutableArray *mappings = [NSMutableArray array];
for (RKAttributeMapping *mapping in self.nestedAttributeMappings) {
if ([mapping.sourceKeyPath rangeOfString:#"."].location == NSNotFound) {
[mappings addObject:mapping];
}
}

Answer 1

I ran into similar issues that was caused by a bug in RestKit https://github.com/RestKit/RestKit/issues/1532 . I'd try to eliminate the possible dot issue by creating a fake JSON response with the same structure but without the dots and see if the problem is still there.