RESTful service response isn't mapping to an object - RESTKit - ios

Question

I have a JSON response from REST service I am using RESTKit and its not getting mapped , below is the source for the same
RKObjectMapping *userMapping = [RKObjectMapping requestMapping];
[userMapping addPropertyMapping:[RKAttributeMapping attributeMappingFromKeyPath:#"strCode" toKeyPath:#"UserCode"]];
RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:userMapping
objectClass:[User class]
rootKeyPath:nil method:RKRequestMethodPOST];
RKObjectMapping *responseMapping = [RKObjectMapping mappingForClass:[User class]];
[responseMapping addAttributeMappingsFromDictionary:#{ #"Id":#"Id",#"UserCode":#"strCode",#"FirstName": #"strFname", #"LastName": #"strLname",#"Email":#"strEmail",#"PhoneNumber":#"strPhoneNumber",#"CompanyName":#"strCompany",#"Address":#"strAddress",#"Abn":#"strAbn"}];
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping
method:RKRequestMethodAny
pathPattern:nil
keyPath:nil
statusCodes:[NSIndexSet indexSetWithIndex:200]];
RKObjectManager *manager = [RKObjectManager sharedManager];
[manager addRequestDescriptor:requestDescriptor];
[manager addResponseDescriptor:responseDescriptor];
RKObjectMapping *errResponseMapping = [RKObjectMapping mappingForClass:[ServiceError class]];
[errResponseMapping addAttributeMappingsFromDictionary:#{ #"ErrorMessage": #"strErrorMessage", #"FriendlyMessage": #"strFriendlyMessage"}];
RKResponseDescriptor *errResponseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:errResponseMapping
method:RKRequestMethodAny
pathPattern:nil
keyPath:nil
statusCodes:[NSIndexSet indexSetWithIndex:200]];
[manager addResponseDescriptor:errResponseDescriptor];
manager.requestSerializationMIMEType = RKMIMETypeJSON;
User *user = [user new];
user.strCode = txtCode.text;
// POST the parameterized representation of the `page` object to `/posts` and map the response
[manager postObject:user path:[ServiceUrls userDetails] parameters:nil success:^(RKObjectRequestOperation *operation, RKMappingResult *result) {
NSlog(#"%d",result.count);
}
} failure:nil];
The user class looks like this
#interface User : NSObject
{
}
#property (nonatomic,retain) NSNumber *Id;
#property (nonatomic,retain) NSString *strCode;
#property (nonatomic,retain) NSString *strFname;
#property (nonatomic,retain) NSString *strLname;
#property (nonatomic,retain) NSString *strEmail;
#property (nonatomic,retain) NSString *strPhoneNum;
#property (nonatomic,retain) NSString *strCompany;
#property (nonatomic,retain) NSString *strAddress;
#property (nonatomic,retain) NSString *strAbn;
#end
JSON response that i get but isn't mapping is as follows
{"Id":7,
"UserCode":"CC1234",
"FirstName":"Test name_",
"LastName":"Banga",
"Email":"p#b.com",
"PhoneNumber":"0421196587",
"CompanyName":"String",
"Address":"String",
"Abn":"String"}
Not sure whats wrong with the code I have added, any clue ?

Answer 1

Maybe try this.
Mapping:
-(void) getUserMapping {
RKEntityMapping *userEntityMapping = [self generateEntityMappingFromClass:[User class]];
userEntityMapping.identificationAttributes = #[#"Id"];
return userEntityMapping;
}
Generate Mapping:
+ (RKEntityMapping *)generateEntityMappingFromClass:(Class)objectClass {
NSAssert(objectClass != NULL, #"Cannot generate a mapping from a null object class.");
NSDictionary *propertiesAndClasses = [[RKPropertyInspector sharedInspector] propertyInspectionForClass:objectClass];
NSAssert([propertiesAndClasses count] > 0, #"Cannot generate a mapping from a class containing zero properties.");
RKEntityMapping *mapping = [RKEntityMapping mappingForEntityForName:NSStringFromClass(objectClass) inManagedObjectStore: [RKManagedObjectStore defaultStore]];
NSMutableDictionary *mappingDictionary = [[NSMutableDictionary alloc] init];
for (NSString *property in [propertiesAndClasses allKeys]) {
NSLog(#"property: %#", property);
[mappingDictionary setObject:property forKey:property];
}
[mapping addAttributeMappingsFromDictionary:mappingDictionary];
return mapping;
}
Response descriptor:
RKResponseDescriptor *responseDescriptorBody = [RKResponseDescriptor responseDescriptorWithMapping:[self getUserMapping] method:RKRequestMethodGET pathPattern:#"" keyPath:#"" statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
I think your problem is JSON without keyPath, try to change it from nil to #""