Upload an Image to a RESTful API - ios

Question

hello I am successfully posting data into server but this time I want to upload an image to server. I am using this function to post the data without image
static func postToServer(url:String,params:Dictionary<String,NSObject>,image:String?, completionHandler: (NSDictionary?, String?) -> Void ) -> NSURLSessionTask {
let request = NSMutableURLRequest(URL: NSURL(string: url)!)
let session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"
if(params["data"] != "get"){
do {
let data = try NSJSONSerialization.dataWithJSONObject(params, options: .PrettyPrinted)
let dataString = NSString(data: data, encoding: NSUTF8StringEncoding)!
print("dataString is \(dataString)")
request.HTTPBody = data//try NSJSONSerialization.dataWithJSONObject(params, options: .PrettyPrinted)
} catch {
//handle error. Probably return or mark function as throws
print("error is \(error)")
//return
}
}
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
let task = session.dataTaskWithRequest(request) {data, response, error -> Void in
// handle error
guard error == nil else { return }
//print("Response: \(response)")
let strData = NSString(data: data!, encoding: NSUTF8StringEncoding)
completionHandler(nil,"Body: \(strData!)")
//print("Body: \(strData!)")
let json: NSDictionary?
do {
json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableLeaves) as? NSDictionary
} catch let dataError {
// Did the JSONObjectWithData constructor return an error? If so, log the error to the console
print(dataError)
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Error could not parse JSON: '\(jsonStr)'")
completionHandler(nil,"Body: \(jsonStr!)")
// return or throw?
return
}
// The JSONObjectWithData constructor didn't return an error. But, we should still
// check and make sure that json has a value using optional binding.
if let parseJSON = json {
// Okay, the parsedJSON is here, let's get the value for 'success' out of it
completionHandler(parseJSON,nil)
//let success = parseJSON["success"] as? Int
//print("Succes: \(success)")
}
else {
// Woa, okay the json object was nil, something went worng. Maybe the server isn't running?
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
completionHandler(nil,"Body: \(jsonStr!)")
}
}
task.resume()
return task
}
Now as I have to send an image now also I think I have to do this
var imageData = UIImageJPEGRepresentation(image, 0.9)
var base64String = imageData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.fromRaw(0)!)
var params = ["image":[ "content_type": "image/jpeg", "filename":"test.jpg", "file_data": base64String]]
now the problem is how can I add these params in the above params variable. I mean right now the format of my params is like this
{
"email" : "hello",
"password" : "hello"
}

Answer 1

Could you not just add them to the params you already have, like this?
var params = ["email":"hello", "password":"hello"]
params["image"] = ["content_type": "image/jpeg", "filename":"test.jpg", "file_data": base64String]