Simple JSON login post on Restkit 0.20

Question

Im following the steps of this old answer. The main issue is that RKObjectLoaderDelegate was removed and im cannot find any alternative that works for me. Im trying to connect t

Answer 1

First, i created a class called Login Request.

LoginRequest.h

#import <Foundation/Foundation.h>
#import "RKObjectMapping.h"

@interface LoginRequest : NSObject
@property (nonatomic, strong) NSString* email;
@property (nonatomic, strong) NSString* password;

+(RKObjectMapping*)defineLoginRequestMapping;
@end

LoginRequest.m

#import "LoginRequest.h"
#import "RKObjectManager.h"

@implementation LoginRequest
@synthesize email;
@synthesize password;

+(RKObjectMapping*)defineLoginRequestMapping   {

    RKObjectMapping *mapping = [RKObjectMapping mappingForClass:[LoginRequest class]];

    [mapping addAttributeMappingsFromDictionary:@{
                                                  @"email":   @"email",
                                                  @"password":   @"password",
                                                  }];


    return mapping;

}

Then, i made a LoginManager class to do the connection.

LoginManager.h

#import <Foundation/Foundation.h>
#import "RKObjectManager.h"
#import "LoginResponse.h"
#import "LoginRequest.h"

@interface LoginManager : NSObject
@property (nonatomic, strong) LoginRequest *dataObject;
@property (nonatomic, strong) RKObjectManager *objectManager;
@property (nonatomic, strong) AFHTTPClient * client;
-(void)LoginWithUserName:(NSString *)username password:(NSString*)password;

@end

LoginManager.m

#import "LoginManager.h"
#import "RKMIMETypeSerialization.h"
#import "RKLog.h"
#import "LoginRequest.h"


@implementation LoginManager

-(void)LoginWithUserName:(NSString *)email password:(NSString*)password {

    LoginRequest *dataObject = [[LoginRequest alloc] init];
    [dataObject setEmail:email];
    [dataObject setPassword:password];



    NSURL *baseURL = [NSURL URLWithString:@"http://www.myurl.com/tokens.json"];

    AFHTTPClient * client = [AFHTTPClient clientWithBaseURL:baseURL];
    [client setDefaultHeader:@"Accept" value:RKMIMETypeJSON];

    RKObjectManager *objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];


    RKObjectMapping *requestMapping =  [[LoginRequest defineLoginRequestMapping] inverseMapping];

    [objectManager addRequestDescriptor: [RKRequestDescriptor
                                          requestDescriptorWithMapping:requestMapping objectClass:[LoginRequest class] rootKeyPath:nil
                                          ]];
    // what to print
    RKLogConfigureByName("RestKit/Network", RKLogLevelTrace);
    RKLogConfigureByName("Restkit/Network", RKLogLevelDebug);

    RKObjectMapping *responseMapping = [LoginResponse defineLoginResponseMapping];

    [objectManager addResponseDescriptor:[RKResponseDescriptor
                                          responseDescriptorWithMapping:responseMapping method:RKRequestMethodAny pathPattern:@"" keyPath:nil statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)

                                          ]];


    [objectManager setRequestSerializationMIMEType: RKMIMETypeJSON];

    [objectManager postObject:dataObject path:@""
                   parameters:nil success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
                       NSLog(@"It Worked: %@", [mappingResult array]);

                   } failure:^(RKObjectRequestOperation *operation, NSError *error) {
                       NSLog(@"It Failed: %@", error);

                   }];
}

And finally, i call the method on viewDidLoad on MasterViewController.m

[[LoginManager alloc] LoginWithUserName:@"mymail@test.com" password:@"mypassword"];

Answer 2

I guess Restkit has included the AFNetworking 2.0 Library. So I think this would work:

RestKit is a modern Objective-C framework for implementing RESTful web services clients on iOS and Mac OS X. It provides a powerful object mapping engine that seamlessly integrates with Core Data and a simple set of networking primitives for mapping HTTP requests and responses built on top of AFNetworking

Post Example:

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters = @{@"foo": @"bar"};
[manager POST:@"http://example.com/resources.json" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];