POST request doesn't work - ios

Question

Here is my prepareForSegue method
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let vc = segue.destinationViewController as! AllCommentsViewController
if segue.identifier == "addComment" {
if let stringText = commentTF.text {
vc.CommentsArray.append(stringText)
let urlString = "http://sekaaleksic.cloudlk.com/api/v1/post/comment/\(postId)/submitComment"
let request = NSMutableURLRequest(URL: NSURL(string: urlString)!)
let session = NSURLSession.sharedSession()
let params = ["comment=\(stringText)"]
request.HTTPBody = try? NSJSONSerialization.dataWithJSONObject(params, options: [])
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
request.addValue("\(stringText)", forHTTPHeaderField: "comment")
request.HTTPMethod = "POST"
let task = session.dataTaskWithRequest(request, completionHandler: { data, response, error -> Void in
print(request.HTTPBody)
print(params)
print(error)
print(response)
print(data)
})
task.resume()
}
}
}
}
So, what's the problem?
As you see, my urlString is where Wordpress API for submitting a comment. postId is an ID of a post.
I should do something like this: $_POST['comment'] = 'some comment message';
But this code isn't working (you can check the number of Comments for specific post on [this link][1])
Here is the XCode Log ->
["test"]
Optional(<5b22636f 6d6d656e 743d7465 7374225d>)
["comment=test"]
nil
Optional(<NSHTTPURLResponse: 0x137bd1300> { URL: http://sekaaleksic.cloudlk.com/api/v1/post/comment/1/submitComment } { status code: 200, headers {
"Cache-Control" = "no-cache, must-revalidate, max-age=0, no-cache";
Connection = "Keep-Alive";
"Content-Encoding" = gzip;
"Content-Length" = 70;
"Content-Type" = "application/json";
Date = "Wed, 10 Feb 2016 14:00:03 GMT";
Expires = "Wed, 11 Jan 1984 05:00:00 GMT";
"Keep-Alive" = "timeout=5, max=700";
Pragma = "no-cache";
Server = Apache;
Vary = "Accept-Encoding";
} })
Optional(<7b227374 61747573 223a6661 6c73652c 22657870 6c61696e 223a2243 6f6d6d65 6e742070 6f737420 69732065 6d707479 227d>)
[1]: http://sekaaleksic.cloudlk.com/api/v1/post/1/countComments

Answer 1

You are encoding the JSON wrong.
Make params equal to:
["comment": stringText]
JSON is used to encode dictionaries, not concatenated strings.