Serialize json for its sample as a string - swift

Question

i'm trying to serialize a json but i have an error could someone give me a guide please i'm doing wrong i'm new to swift[enter image description here][1]
let code = "00001"
let firstName = "Joe"
let lastName = "Doe"
let middleName = "Mc."
let age = 100
let weight = 45
let jsonObject: [String: [String:Any]] = [
"code": code, <---- Cannot convert value of type 'String' to expected dictionary value type '[String : Any]'
"attributeMap": [
"first_name": firstName,
"middle_name": middleName,
"last_name": lastName,
"age": age,
"weight": weight
]
]
if let data = try? JSONSerialization.data(withJSONObject: jsonObject, options: .prettyPrinted),
let str = String(data: data, encoding: .utf8) {
print("===> \(str)")
}
--I would like a result like this JSON format
{
"code": "00001",
"attributeMap": {
"first_name": "Joe",
"middle_name": "Mc",
"last_name": "Doe",
"age": "23",
"weight": "home.zul"
}
}

Answer 1

If it repeatable operation I will prefer to use more "swifty" way. Let's define two structs
Person
struct Person: Encodable {
// Keys
enum CodingKeys: String, CodingKey {
case firstName = "first_name"
case middleName = "middle_name"
case lastName = "last_name"
case age
case weight
}
// Properties
let firstName: String
let middleName: String
let lastName: String
let age: Int
let weight: Double
}
The next one
Entity
struct Entity: Encodable {
// Keys
enum CodingKeys: String, CodingKey {
case code
case person = "attributeMap"
}
// Properties
let code: String
let person: Person
}
Usage
let person = Person(
firstName: "Joe",
middleName: "Mc.",
lastName: "Doe",
age: 100,
weight: 45
)
let entity = Entity(
code: "200",
person: person
)
if
let data = try? JSONEncoder().encode(entity),
let json = String(data: data, encoding: .utf8)
{
// Do something
}
Result
{"attributeMap":{"age":100,"last_name":"Doe","middle_name":"Mc.","weight":45,"first_name":"Joe"},"code":"200"}