Authorization with RESTKit and Devise Tokens - ruby-on-rails

Question

New to iOS... I have a Rails/Devise application that is set up with token_authenticatable. I have a tokens controller that returns a token when a valid email and password is posted:
URL: http://localhost:3000/tokens.json
Body: email=example#example.com&password=foobar
Response:
{
"token": "xyzxyztoken"
}
Once created this token grants access to other sections of the site and this works in a test client (RESTClient). I have been stuck for a while connecting to it using RESTKit in iOS.
I create my RKObjectManager in AppDelegate.m:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
RKURL *baseURL = [RKURL URLWithBaseURLString:#"http://localhost:3000"];
self.objectManager = [RKObjectManager objectManagerWithBaseURL:baseURL];
self.objectManager.client.baseURL = baseURL;
return YES;
}
I have a view controller and when you tap a button it calls this:
-(IBAction)btnLoginRegisterTapped:(UIButton*)sender
{
// get the object manager
RKObjectManager *objectManager = [RKObjectManager sharedManager];
objectManager.serializationMIMEType = RKMIMETypeJSON;
// set mapping
RKObjectMapping *nameMapping = [RKObjectMapping mappingForClass:[Token class]];
[nameMapping mapKeyPathsToAttributes:#"token", #"token", nil];
[objectManager.mappingProvider setMapping:nameMapping forKeyPath:#""];
// create url
NSDictionary *queryParams;
queryParams = [NSDictionary dictionaryWithObjectsAndKeys:#"example#example.com", #"email", #"foobar", #"password", nil];
RKURL *URL = [RKURL URLWithBaseURL:[objectManager baseURL] resourcePath:#"/tokens.json" queryParameters:queryParams];
[objectManager loadObjectsAtResourcePath:[NSString stringWithFormat:#"%#?%#", [URL resourcePath], [URL query]] delegate:self];
}
This is my error:
2013-01-10 16:32:55.554 MyApp[69314:14003] response code: 404
2013-01-10 16:32:55.555 MyApp[69314:14003] W restkit.network:RKObjectLoader.m:300 Unable to find parser for MIME Type 'text/html'
2013-01-10 16:32:55.555 MyApp[69314:14003] W restkit.network:RKObjectLoader.m:329 Encountered unexpected response with status code: 404 (MIME Type: text/html -> URL: http://localhost:3000/tokens.json?password=foobar&email=example%40example.com -- http://localhost:3000 -- http://localhost:3000)
2013-01-10 16:32:55.556 MyApp[69314:14003] Error: The operation couldn’t be completed. (org.restkit.RestKit.ErrorDomain error 4.)
This may be a simple question but I am lost. I think I just am not understanding POSTing from iOS in general. One thing to possibly note is that viewing /tokens.json in a browser returns a Routing Error because I do not actually have a view for that:
No route matches [GET] "/tokens.json"
Anyway the point of all this is for a user to log in and get a token stored and then use it to access other data from the rails app.
Please let me know if more clarification is needed.

Answer 1

In your rails app, open config/routes.rb
add
resources :tokens