Confusion setting mapping in RKObjectMapping - Rest - iphone

Question

Please help in set mapping with RestKit, I am lost to find how to do this.
My JSON is like
{
"result":{
"success":"1",
"message":"You logged in successfully.",
"data":{
"user_id":"1",
"firstname":"somefirstname",
"lastname":"somelastname",
"username":"someusername",
"country_id":"someid",
"country_name":"somecountry",
"phone":"1234567890",
"status":"active"
}
}
}
What I have done so far is
RKObjectMapping *loginMapping = [RKObjectMapping mappingForClass:[Login class]];
[loginMapping addAttributeMappingsFromDictionary:#{ #"user_id":#"intUserID", #"firstname":#"strFirstName", #"lastname":#"strLastName"}];
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:loginMapping
method:RKRequestMethodGET
pathPattern:#"PathTOLogin"
keyPath:#"result.data"
statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
[AFNetworkActivityIndicatorManager sharedManager].enabled = YES;
NSURL *baseURL = [NSURL URLWithString:kAPIBaseURLString];
AFHTTPClient* client = [[AFHTTPClient alloc] initWithBaseURL:baseURL];
RKObjectManager *objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];
Login *loginObject = [[Login alloc] init];
[objectManager getObject:loginObject path:kUserLogin parameters:params success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
}];
The problems is like some times JSON response may be like
{
"result":{
"success":"0",
"message":"Invalid Username or Password",
}
}
So it throws error
Error Domain=org.restkit.RestKit.ErrorDomain Code=1001
So I thought to add 2 more properties in Model class as success/message along with all other properties but I stuck on setting custom mapping as those properties are on root and other is in key path "result.data".
Can somebody please help.

Answer 1

You should change your login mapping to something like:
RKObjectMapping *loginMapping = [RKObjectMapping mappingForClass:[Login class]];
[loginMapping addAttributeMappingsFromDictionary:#{ #"success":#"success", #"message":#"message", #"data.user_id":#"intUserID", #"data.firstname":#"strFirstName", #"data.lastname":#"strLastName"}];
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:loginMapping
method:RKRequestMethodGET
pathPattern:#"PathTOLogin"
keyPath:#"result"
statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
Basically, remove 'data' from the key path of the response descriptor and instead use it in the mapping key paths.

Answer 2

you can first check whether data exists or not by checking the following condition
if([yourDictionary valueForKeyPath:#"result.data"]){
RKObjectMapping *loginMapping = [RKObjectMapping mappingForClass:[Login class]];
[loginMapping addAttributeMappingsFromDictionary:#{ #"user_id":#"intUserID", #"firstname":#"strFirstName", #"lastname":#"strLastName"}];
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:loginMapping
method:RKRequestMethodGET
pathPattern:#"PathTOLogin"
keyPath:#"result.data"
statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
[AFNetworkActivityIndicatorManager sharedManager].enabled = YES;
NSURL *baseURL = [NSURL URLWithString:kAPIBaseURLString];
AFHTTPClient* client = [[AFHTTPClient alloc] initWithBaseURL:baseURL];
RKObjectManager *objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];
Login *loginObject = [[Login alloc] init];
[objectManager getObject:loginObject path:kUserLogin parameters:params success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
}];
}
else{
NSLog(#"No data available");
}
Hope this will help you.