`Extra argument method in call` in Alamofire - swift

Question

I am trying to send the following data using Alamofire version 3 and Swift 3. And the error that I get is Extra argument method in call.
Here is what I have done so far:
struct userGoalServerConnection {
let WeightsUserGoal_POST = "http://api.umchtech.com:3000/AddWeightsGoal"
}
struct wieghtsUserGoal {
let id : Int
let token : String
let data : [ String : String ]
}
func syncInitialUserGaolValuesWithServer (userID : Int , userToken : String ){
let serverConnection = userGoalServerConnection()
let weightValue = wieghtsUserGoal.init(id: userID,
token: userToken,
data: ["weight_initial":"11","weight_end":"11","weight_difference":"11","calories_deficit":"11","difficulties":"11","weight_loss_week":"11","start_date":"2016-12-12","end_date":"2016-12-23","days_needed":"11"])
Alamofire.request(userGoalServerConnection.WeightsUserGoal_POST, method:.post, parameters: weightValue, encoding: JSONEncoding.default, headers:nil).responseJSON { response in
print(response.request as Any) // original URL request
print(response.response as Any) // URL response
print(response.result.value as Any) // result of response serialization
}
I am quite new to this so please dont mind if my question is a little bit too noob. I have gone through similar questions here but they did not help me out figuring where am i making a mistake :)

Answer 1

You are passing weightValue as POST param in request, it can't be. If you are using JSONEncoding then pass type of Parameters object.
let params: Parameters = [
"Key1": "value1",
"key2": "value2"
]

Answer 2

You can only pass dictionary type a alamofire request, you cannot post a struct type.
you can send [String : String], [String : Any] etc in a Alamofire request
You can try this way out
let WeightsUserGoal_POST = "http://api.umchtech.com:3000/AddWeightsGoal"
func Serialization(object: AnyObject) -> String{
do {
let stringData = try JSONSerialization.data(withJSONObject: object, options: [])
if let string = String(data: stringData, encoding: String.Encoding.utf8){
return string
}
}catch _ {
}
return "{\"element\":\"jsonError\"}"
}
func syncInitialUserGaolValuesWithServer (userID : Int , userToken : String ){
let data = ["weight_initial":"11","weight_end":"11","weight_difference":"11","calories_deficit":"11","difficulties":"11","weight_loss_week":"11","start_date":"2016-12-12","end_date":"2016-12-23","days_needed":"11"] as! [String : String]
let dataSerialized = Serialization(object: data as AnyObject)
let param = ["id" : userID,
"token" : userToken,
"data" : dataSerialized ]
Alamofire.request(WeightsUserGoal_POST, method: .post, parameters: param ,encoding: JSONEncoding.default, headers: nil).responseJSON { response in
print(response.request as Any) // original URL request
print(response.response as Any) // URL response
print(response.result.value as Any) // result of response serialization
}
}