Why is API rejecting my JSON? - ios

Question

I can add an object to an API via JSON when I send the request using byte char[] however it doesn't work when I convert an NSDictionary to NSData and send that. What's the problem here ?
Here's when it works.
// Request
NSURL* URL = [NSURL URLWithString:#"SOME URL"];
NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:URL];
request.HTTPMethod = #"POST";
request.timeoutInterval = 30.000000;
// Headers
[request addValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request addValue:#"application/json" forHTTPHeaderField:#"Accept"];
// Body
const char bytes[98] = "{\n\t\"user\" :\n\t{\n\t\t\"email\" : \"test#gmail.com\",\n\t\t\"username\" : \"example\",\n\t\t\"password\" : \"cryptx\"\n\t}\n}";
request.HTTPBody = [NSData dataWithBytes:bytes length:98];
// Connection
NSURLConnection* connection = [NSURLConnection connectionWithRequest:request delegate:nil];
[connection start];
This is when it doesn't work:
- (void)addUser:(User *)user
{
NSURL* URL = [NSURL URLWithString:#"API_URL"];
NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:URL];
request.HTTPMethod = #"POST";
request.timeoutInterval = 30.000000;
[request addValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request addValue:#"application/json" forHTTPHeaderField:#"Accept"];
NSData *data = [self createJSONWithUsername:#"X" andEmail:#"x#X.com" andPassword:#"pass"];
[request setHTTPBody:data];
NSLog(#"%#", [[NSString alloc] initWithData:request.HTTPBody encoding:NSUTF8StringEncoding]);
NSURLConnection *connection = [NSURLConnection connectionWithRequest:request delegate:self];
[connection start];
}
- (NSData *)createJSONWithUsername:(NSString *)username andEmail:(NSString *)email andPassword:(NSString *)password
{
NSArray *objects = [NSArray arrayWithObjects:password, email, username, nil];
NSArray *keys = [NSArray arrayWithObjects:#"password", #"email", #"username", nil];
NSDictionary *userDataDictionary = [NSDictionary dictionaryWithObjects:objects forKeys:keys];
NSDictionary *userDictionary = [NSDictionary dictionaryWithObjectsAndKeys:userDataDictionary, #"user", nil];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:userDictionary options:NSJSONWritingPrettyPrinted error:nil];
return jsonData;
}
The second one does not add the user while the second one does.
EDIT
JSON BEING SENT i.e. the jsonString variable
{
"user" : {
"email" : "x#X.com",
"username" : "X",
"password" : "pass"
}
}

Answer 1

This is how I'd do it. It's pretty much exactly what I use in a few apps. I formatted around your provided code...
- (void)addUser:(NSDictionary *)sentuserdetails {
NSURL *url = [NSURL URLWithString:#"SOME URL"];
NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = #"POST";
request.timeoutInterval = 30.000000;
[request addValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request addValue:#"application/json" forHTTPHeaderField:#"Accept"];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:sentuserdetails options:NSJSONWritingPrettyPrinted error:nil]; //don't set error to nil, handle the error
[request setHTTPBody:jsonData];
NSURLConnection *connection = [NSURLConnection connectionWithRequest:request delegate:self];
[connection start];
}