Unable to POST to Server using RestKit - objective-c

Question

I have been trying this for quite sometime now, but I just couldn't be able to post successfully to my server. I have read this, github object mapping overview for the Restkit and, the Gist restKit tutorial.
My Problem
I am trying to post sign in information(nickname,hardwareId,phone model) and get the AccountId from my server. But I am getting this response from the console:
GuessTheImage[6832:70b] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<AccountsClass 0x8c5cba0> valueForUndefinedKey:]: this class is not key value coding-compliant for the key AccountInfo.'
What I think is the problem
I believe I am messing up the way I store the data right before the mapping part. But I am not sure where exactly.
The JSON that I am trying post should look like this
{
"DeviceType": "sample string 1",
"HardwareId": "sample string 2",
"NickName": "sample string 3",
"AccountId": 4
}
Overview of the program
I created the variables for mapping in the AccountClass. From loginviewcontroller, I get the device type, hardwareId and nickname after the user clicks login button and assign those variables to the variables in AccountClass and map it POST if afterwards.
AccountClass.h
#import <Foundation/Foundation.h>
#interface AccountsClass : NSObject
#property (nonatomic, strong,retain)NSString *DeviceType;
#property (nonatomic,strong)NSNumber *AccountId;
#property (nonatomic,strong) NSString *NickName;
#property (nonatomic,strong) NSNumber *HardwareId;
#end
LoginViewController.h
#import <UIKit/UIKit.h>
#interface LoginViewController : UIViewController<UITextFieldDelegate>
#property (strong, nonatomic) IBOutlet UITextField *usernameTextField;
#property (strong, nonatomic) IBOutlet UIButton *submitButton;
#property (nonatomic,readonly) NSUUID *identifierForVendor;
#property(nonatomic, readonly, retain) NSString *model;
#property (nonatomic,readonly,retain)NSString *StoreIdentifierForVendor;
#property (nonatomic,readonly,retain)NSString *StoreTheModel;
- (IBAction)submit:(id)sender;
#property (nonatomic,strong)NSString *nickname;
#end
LoginViewController.m
#import "LoginViewController.h"
#import <RestKit/RestKit.h>
#import "AccountsClass.h"
#interface LoginViewController ()
#end
#implementation LoginViewController
#synthesize usernameTextField;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(dissmissKeyboard)];
[self.view addGestureRecognizer:tap];
[usernameTextField setDelegate:self];
}
-(void)loadPostRequest
{
_StoreIdentifierForVendor = [[[UIDevice currentDevice]identifierForVendor]UUIDString];
_StoreTheModel = [UIDevice currentDevice].model;
_nickname = usernameTextField.text;
AccountsClass *AccountInfo = [[AccountsClass alloc] init];
AccountInfo.NickName = _nickname;
NSNumberFormatter *hardwareIdentification = [[NSNumberFormatter alloc]init];
[hardwareIdentification setNumberStyle:NSNumberFormatterScientificStyle];
NSNumber *hwreID =[hardwareIdentification numberFromString:_StoreIdentifierForVendor];
AccountInfo.HardwareId = hwreID;
AccountInfo.DeviceType =_StoreTheModel;
RKObjectMapping *responseMapping = [RKObjectMapping mappingForClass:[AccountsClass class]];
[responseMapping addAttributeMappingsFromArray:#[#"NickName", #"HardwareId", #"DeviceType",#"AccountId"]];
NSIndexSet *statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful); // Anything in 2xx
RKResponseDescriptor *AccountDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping method:RKRequestMethodAny pathPattern:nil keyPath:nil statusCodes:statusCodes];
RKObjectMapping *requestMapping = [RKObjectMapping requestMapping]; // objectClass == NSMutableDictionary
[requestMapping addAttributeMappingsFromArray:#[#"AccountInfo.NickName", #"AccountInfo.HardwareId", #"AccountInfo.DeviceType",#"AccountInfo.AccountId"]];
// For any object of class Article, serialize into an NSMutableDictionary using the given mapping and nest
// under the 'article' key path
RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[AccountInfo class] rootKeyPath:nil method:RKRequestMethodAny];
RKObjectManager *manager = [RKObjectManager managerWithBaseURL:[NSURL URLWithString:#"https://picquiz.azurewebsites.net"]];
[manager addRequestDescriptor:requestDescriptor];
[manager addResponseDescriptor:AccountDescriptor];
// POST to create
[manager postObject:AccountInfo path:#"/Accounts" parameters:nil success:nil failure:nil];
}
-(void)dissmissKeyboard
{
[usernameTextField resignFirstResponder];
}
- (IBAction)submit:(id)sender {
[self loadPostRequest];
}
#end
I will appreciate your help.

Answer 1

Your problem appears to be:
[requestMapping addAttributeMappingsFromArray:#[#"AccountInfo.NickName", #"AccountInfo.HardwareId", #"AccountInfo.DeviceType",#"AccountInfo.AccountId"]];
because the data that you are trying to POST doesn't have nested data like that. It looks like it should be:
[requestMapping addAttributeMappingsFromArray:#[#"NickName", #"HardwareId", #"DeviceType",#"AccountId"]];