Do a simple json POST using RESTKit

Question

I\'m new to iOS development and I\'m having trouble making a simple Json POST request. I have a NSDictionary containing an user and password and I want to send those values

Answer 1

I had the same problem, and this is what solved it for me. Note, in my scenario, I only wanted to access RKRequest.

NSDictionarty *dict
NSError *error; 
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:0 error:&error];

if (!jsonData) 
{
    NSAssert(FALSE, @"Unable to serialize JSON from NSDict to NSData"); 
} 
else 
{
    NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
    request.params = [RKRequestSerialization serializationWithData:[jsonString dataUsingEncoding:NSUTF8StringEncoding] MIMEType:RKMIMETypeJSON];
}

The key for me was the 'MIMEType:RKMIMETypeJSON' in the last line. Since I only wanted to use RKRequest, this was how I needed to set the MIME type. Otherwise, I would use Paul Cezanne's suggestion.

Answer 2

For older RestKit

You probably have something like this in your delegate:

    objectManager.serializationMIMEType = RKMIMETypeFormURLEncoded;

You want it to be:

    objectManager.serializationMIMEType = RKMIMETypeJSON;

For RestKit v.20:

    // thanks  ColdLogic (from his comment)
    [objectManager setRequestSerializationMIMEType:RKMIMETypeJSON];