Put request IOS - ios

Question

I try to update a object in the database trough a API call. I do this action with a PUT request. A Post request was already made and is working fine. I thought it is just copy paste...
The API part works fine because if I execute the following curl command than it updates the row I wanted in the database
$ curl -H 'Accept: application/json' -i -X PUT -d 'UserLogin=Ub0D&EndDate=2014-01-17 00:00:00.0000000&Sport=Fietsen&Distance=1000&Duration=10&Achieved=true&DateCreated=2015-05-09 12:01:00.000000' http://localhost:8089/api/goal/ub0d -k -u ub0d:test123
But now the part in swift gives me a bad request error (400)...
This is my code
var url : NSURL
url = NSURL(string: _apiUrl + connectToApi(apiCall) + String("\(AccountRepository.Instance.getCurrentUserName())"))!
let request = NSMutableURLRequest(URL: url)
if postString != nil {
let postData : NSData = ("UserLogin=Ub0D&EndDate=2014-01-1700:00:00.0000000&Sport=Fietsen&Distance=1000&Duration=10&Achieved=true&DateCreated=2014-01-1700:00:00.0000000").dataUsingEncoding(NSUTF8StringEncoding)!
// create the request
request.HTTPMethod = "PUT"
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "content-type")
request.setValue("application/json", forHTTPHeaderField: "Content-type")
request.setValue("application/json", forHTTPHeaderField: "Accept")
request.HTTPBody = postData
}
var connection: NSURLConnection = NSURLConnection(request: request, delegate: self, startImmediately: true)!
I'm really stuck on it:(

Answer 1

You request can't have two different content types at the same time:
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "content-type")
request.setValue("application/json", forHTTPHeaderField: "Content-type")
The data you are sending are obviously not JSON, so I guess you want only
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "content-type")
and remove the "application/json" line.
There is also a difference between your date formats:
CURL
EndDate=2014-01-17 00:00:00.0000000
Swift
EndDate=2014-01-1700:00:00.0000000
Note the missing space between date and time, probably should be URL encoded (+):
EndDate=2014-01-17+00:00:00.0000000
In general, most REST APIs send error messages in response body, so it is always good to log the response for failed requests.