Alamofire doesnt allow to send object directly - ios

Question

My API only accepts object as the body , but alamofire only sends Dictionary as an object, which my server is not accepting requesting help
I have to call an API which is a post api using alamofire
as soon as i convert the model to dictionary and dicitionary to json
and post it Alamofire does not allow me to post a string
it allows me to send a dictionary which my api does not accept
["key":"value"]- Not acceptable
{"key":"value"}- Acceptable
Can anyone share any solution?
I am using Swift 5 , Xcode 10, Alamofire 4.8.2
do{
let d = try data.asDictionary()
jsonString = DictionaryToJSON(data: dictionary)
} catch {
print(error)
}
Alamofire.request(url, method: .post, parameters: jsonString, encoding: .utf8, headers: [: ]).responseJSON { (res) in
print(res.result)
print("Request Data \(res.request) \n Dictionary \(jsonString)")
do {
let d = try JSONDecoder().decode([OTPMessage].self, from: res.data!)
print(d[0].message)
} catch {
print(error)
}
}
// Dictionary to JSON
func DictionaryToJSON(data: [String:Any])->String {
if let theJSONData = try? JSONSerialization.data(
withJSONObject: data,
options: .prettyPrinted
),
let theJSONText = String(data: theJSONData, encoding: String.Encoding.ascii) {
print("JSON string = \n\(theJSONText)")
return theJSONText
}
else {
return ""
}
}
// Object to Dictionary
extension Encodable {
func asDictionary() throws -> [String: Any] {
let data = try JSONEncoder().encode(self)
guard let dictionary = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as? [String: Any] else {
throw NSError()
}
return dictionary
}
}
//Struct
struct OTPMessage:Codable {
var message = String()
}

Answer 1

You don't have to convert your dictionary to a JSON String because Alamofire can do the encoding, see this example.
I suggest you to change your code to something like this
do{
let dictionary = try data.asDictionary()
Alamofire.request(url, method: .post, parameters: dictionary, encoding: .JSON, headers: [:]).responseJSON { (res) in
print(res.result)
print("Request Data \(res.request) \n Dictionary \(jsonString)")
do{
let d = try JSONDecoder().decode([OTPMessage].self, from: res.data!)
print(d[0].message)
}catch{
print(error)
}
}
} catch{
print(error)
}

Answer 2

With Alamofire you can not do this. What you need to do is creating a URLRequest object and setting the httpBody property of it and then passing it to Alamofire.
URLRequest allows you to have Data as POST body.
var request = URLRequest(url: urlFinal)
request.httpMethod = HTTPMethod.post.rawValue
request.allHTTPHeaderFields = dictHeader
request.timeoutInterval = 10
request.httpBody = newPassword.data(using: String.Encoding.utf8)
Alamofire.request(request).responseString { (response) in
if response.response!.statusCode >= 200 && response.response!.statusCode <= 300 {
completion("success")
}else {
completion("failed")
}
}
here newPassword is string. from there I created the Data object. You have to convert your Custom class object to Data object.