How to make JSON from nested struct-CodePudding

I have a nested struct:

struct Order: Codable {
    
    let foodList: [FoodList]
    let name: String
    let phone: String
    let email: String
}

struct FoodList: Codable {
    
    let foodName: String
    let foodID: String
    let foodAmount: Int
}

I need to make JSON from this struct. It have to be like this:

{
  "name": "Name",
  "phone": " 1 999 999 999 999",
  "email": "[email protected]",
  "foodList": [
    {
      "foodName": "Big Mac",
      "foodID": "115",
      "foodAmount": 2
    },
    {
      "foodName": "Naggets",
      "foodID": "221",
      "foodAmount": 5
    }
  ]
}

But I always get this JSON )

[
  {
    "email": "Name",
    "phone": " 1 999 999 999 999",
    "foodList": {
      "foodAmount": 2,
      "foodID": "115",
      "foodName": "Big Mac"
    },
    "name": "[email protected]"
  },
  {
    "email": "[email protected]",
    "phone": " 1 999 999 999 999",
    "foodList": {
      "foodAmount": 5,
      "foodID": "221",
      "foodName": "Naggets"
    },
    "name": "Name"
  }
]

In JSON it have to be 1 Person and array of selected food.

I code JSON to struct with this code:

let orderList = [OrderList]()
for index in 0..<subMenuList.count {
    if subMenuList[index].foodList.foodSelectedAmount != 0 {
        
        orderList.append(OrderList(
                            foodList: FoodListOrder(
                                foodName: subMenuList[index].foodList.foodName,
                                foodID: subMenuList[index].foodList.foodID,
                                foodAmount: subMenuList[index].foodList.foodSelectedAmount),
                            name: mainView.nameTextField.text!,
                            phone: mainView.phoneTextField.text!,
                            email: mainView.emailTextField.text!))
    }
let jsonEncoder = JSONEncoder()
do {
    let jsonData = try jsonEncoder.encode(orderList)
    print(String(data: jsonData, encoding: .utf8)!)
} catch {
    print(error)
}

Something wrong in "FOR" block and textfields... I think. I am appending person's data from textfields each time it loops.

CodePudding user response：

Assuming Order is equal to OrderList and FoodList is equal to FoodListOrder you have to create first the FoodList array and then create the (single) Order object.

var foodList = [FoodList]()
for item in subMenuList { // don't use an index based loop if you actually don't need the index
    if item.foodList.foodSelectedAmount != 0 {
        foodList.append(FoodList(foodName: item.foodList.foodName,
                                 foodID: item.foodList.foodID,
                                 foodAmount: item.foodList.foodSelectedAmount)
    }
}
let order = Order(foodList: foodList,
                  name: mainView.nameTextField.text!,
                  phone: mainView.phoneTextField.text!,
                  email: mainView.emailTextField.text!)

let jsonEncoder = JSONEncoder()
do {
    let jsonData = try jsonEncoder.encode(order)
    print(String(data: jsonData, encoding: .utf8)!)
} catch {
    print(error)
}