Post Data format is diffrent then what I needed - iphone

Question

I am having a simple problem while making a request to server for updating a name field. I need to post some data in this format:-
{"api_token"=>"api", "device_token"=>"device", "user"=>{"name"=>"mohit"}, "id"=>"4"}
But when i am trying to post something its posting in this format:-
{"user"=>"(\n {\n name = ChangeName;\n }\n)", "api_token"=>"api", "device_token"=>"device", "id"=>"4"}
I am not able to figure out how to change my code to generate proper request. Here is the code that I am using.
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:#"http://localhost:3000/users/4?api_token=api&device_token=device"]];
NSMutableDictionary *dict= [NSMutableDictionary dictionaryWithObjectsAndKeys: #"Mike",#"name", nil];
NSArray *array=[[NSArray alloc]initWithObjects:dict, nil];
[request setPostValue:array forKey:#"user"];
[request setRequestMethod:#"PUT"];
[request setDelegate:self];
[request setDidFinishSelector:#selector(requestFinished:)];
[request startAsynchronous];
Please let me know if i need to post some more code fragments.

Answer 1

ASIFormDatRequest setPostValue:forKey: wants strings, not structures. It ends up calling description to convert them to strings and you're getting the printable description of an array with a dictionary in it.
Rails uses a naming scheme that allows you to simulate a hierarchy in a flat space using a field naming convention detailed at http://guides.rubyonrails.org/form_helpers.html. You should read that and understand the html produced by the form helpers.
Try:
[request setPostValue:#"mohit" forKey:#"user[name]"];
and rails will unpack it into the proper kind of collection on the server.