get method using RKObjectManager instead of RKRequestOperation - RestKit - ios

Question

Below is the function which uses RKObjectRequestOperation for get method how to write the same using RKObjectManager
NSString *hostName = [NSString stringWithFormat:#"%#",[self getHostName]];
NSString *urls = [[NSString alloc] initWithFormat:#"%#/randomcollection/%#/0/%li",hostName,profileId,(long)noOfItems];
RKObjectMapping *responseMapping = [MappingProvider collectionMapping ];
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping method:RKRequestMethodAny pathPattern:nil keyPath:nil statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
NSURL *URL = [NSURL URLWithString:urls];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL cachePolicy:NSURLCacheStorageAllowedInMemoryOnly timeoutInterval:90.0f];
[request setValue:[GameManager sharedInstance].authenticatedUser.appTokenId forHTTPHeaderField:#"tokenId"];
RKObjectRequestOperation *objectRequestOperation = [[RKObjectRequestOperation alloc] initWithRequest:request responseDescriptors:#[ responseDescriptor ]];
[objectRequestOperation setCompletionBlockWithSuccess:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
if (success) {
RKLogInfo(#"Load collection: %#", mappingResult.array);
}
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
if (failure) {
failure(operation, error);
}
}];
[objectRequestOperation start];
Edit: Here's what I have tried it gives me error of * Assertion failure in -[RKRouter URLWithRoute:object:]
NSString *hostName = [NSString stringWithFormat:#"%#",[self getHostName]];
NSString* urls = [[NSString alloc] initWithFormat:#"%#/userprofile/selectbyid/%#",hostName,profileId];
RKObjectManager *manager = [RKObjectManager managerWithBaseURL:[NSURL URLWithString:urls]];
[manager.HTTPClient setDefaultHeader:#"tokenId" value:[GameManager sharedInstance].authenticatedUser.appTokenId];
RKObjectMapping *responseMapping = [MappingProvider userProfileRespMapping ];
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping method:RKRequestMethodGET pathPattern:nil keyPath:nil statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
[manager addResponseDescriptor:responseDescriptor];
UserProfile * modelObject = [[UserProfile alloc] init];
[modelObject setProfileId:profileId];
[[RKObjectManager sharedManager] getObject:modelObject
path:nil
parameters:nil
success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
if (success) {
RKLogInfo(#"Load collection of Userprofiles: %#", mappingResult.array);
NSLog(#"Mapping Results %#",[mappingResult.array firstObject]);
UserProfile *currentUserProfile = (UserProfile *)[mappingResult.array firstObject];
success(currentUserProfile);
}
}
failure:^(RKObjectRequestOperation *operation, NSError *error) {
if (failure) {
RKLogError(#"Operation failed with error: %#", error);
failure(operation, error);
}
}];

Answer 1

It's very simple. It should look like this. This will give you a starting point. For a more detailed answer you should concretize your question.
// Initial setup
RKObjectManager *manager = [RKObjectManager managerWithBaseURL:[NSURL URLWithString:#"your base url"]];
RKObjectMapping *mapping = [RKObjectMapping mappingForClass:modelClass];
[mapping addAttributeMappingsFromDictionary:#{#"sourceProperty" : #"destinationProperty"}];
[manager addResponseDescriptor:
[RKResponseDescriptor
responseDescriptorWithMapping:mapping
method:RKRequestMethodGET
pathPattern:#"yourPath"
keyPath:#"jsonStructureDepending"
statusCodes:
RKStatusCodeIndexSetForClass(
RKStatusCodeClassSuccessful)]];
[[manager router].routeSet
addRoutes:#[
[RKRoute routeWithClass:[model class]
pathPattern:#"yourPath"
method:RKRequestMethodGET]];
//Within your controller or elsewhere
[[RKObjectManager sharedManager] getObject:modelObject
path:nil
parameters:nil
success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
}
failure:^(RKObjectRequestOperation *operation, NSError *error) {
}];