how to create json object in swift 5

Question

how can i create this json :

{"orderItems":"[{\"product_id\":19,\"quantity\":2,\"size_key\":\" 39 40 42\"},"retailer_id":20,"status":"initial"}

here is code :--

let para:NSMutableDictionary = NSMutableDictionary()
let prodArray:NSMutableArray = NSMutableArray()
para.setValue(20 , forKey: "retailer_id")
para.setValue("initial", forKey: "status")

for product in colorsArray {
  let prod: NSMutableDictionary = NSMutableDictionary()
  prod.setValue(product.product?["id"] , forKey: "product_id")
  prod.setValue("1", forKey: "quantity")
  prod.setValue(variabledata, forKey: "size_key")
  prodArray.add(prod)
}

para.setValue(20 , forKey: "retailer_id")
para.setValue("initial", forKey: "status")

Perhaps this would help. stackoverflow.com/a/29516706/9462397 . It is a lot like typescript. — hooperdev
– hooperdev, Commented Nov 26, 2019 at 13:59
That being said, I would use the Codable protocol for this. — koen
– koen, Commented Nov 26, 2019 at 14:07
At least never use NSMutable... collection types in Swift. — vadian
– vadian, Commented Nov 26, 2019 at 14:31

SGDev · Accepted Answer · 2019-11-26 15:01:34Z

2

Not sure about JSON but according to giving JSON and code part.

JSON should be {"orderItems" : [{"product_id" : 19 , "quantity" : 2 , "size_key" : "39 40 42"}],"retailer_id":20,"status":"initial"}

JSON creator code:

var para : [String:Any] = [String:Any]()
var prodArray : [[String:Any]] = [[String:Any]]()

para["retailer_id"] = 20
para["initial"] = "status"

for product in colorsArray {
    var prod : [String : Any] = [String : Any]()
    if let productId = product.product?["id"] {
         prod["product_id"] = productId
    }

    prod["quantity"] = "1"
    prod["size_key"] = variabledata

    prodArray.append(prod)
}

para["orderItems"] = prodArray
print(para)

answered Nov 26, 2019 at 15:01

SGDev

2,2522 gold badges15 silver badges29 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Timothy Stokarski · Accepted Answer · 2019-11-26 14:22:21Z

1

How about this version:

// MARK: - DataStructure
struct DataStructure: Codable {
    let orderItems: [OrderItem]
}

// MARK: - OrderItem
struct OrderItem: Codable {
    let productID, quantity: Int
    let sizeKey: String
    let retailerID: Int
    let status: String

    enum CodingKeys: String, CodingKey {
        case productID = "product_id"
        case quantity
        case sizeKey = "size_key"
        case retailerID = "retailer_id"
        case status
    }
}

answered Nov 26, 2019 at 14:22

Timothy Stokarski

2721 silver badge6 bronze badges

2 Comments

koen Over a year ago

You should also add the encoding part.

saurabh tripathi Over a year ago

how can i use this please elaborate it .

vadian · Accepted Answer · 2019-11-27 09:38:49Z

1

You want a JSON string inside a JSON string. To accomplish that you have to encode only the array, then add the value to the dictionary and call JSONSerialization a second time.

Referring to your answer replace

para["orderItems"] =   ("\(prodArray)")

let jsonData = try! JSONSerialization.data(withJSONObject: para )
let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)

(By the way please never use that horrible NSString syntax in Swift)

with

let jsonData = try! JSONSerialization.data(withJSONObject: prodArray)
let arrayString = String(data: jsonData, encoding: .utf8)!
para["orderItems"] = arrayString
let resultData = try! JSONSerialization.data(withJSONObject: para)
let jsonString = String(data: resultData, encoding: .utf8)!

edited Nov 27, 2019 at 9:38

answered Nov 27, 2019 at 9:32

vadian

286k32 gold badges378 silver badges379 bronze badges

Comments

vadian · Accepted Answer · 2019-11-27 09:15:51Z

0

var para : [String:Any] = [String:Any]()
var prodArray : [[String:Any]] = [[String:Any]]()

para["retailer_id"] = 20
para["status"] = "initial"

for product in colorsArray {
    var prod : [String : Any] = [String : Any]()
    if let productId = product.product?["id"] {
         prod["product_id"] = productId
    }

    prod["quantity"] =  1
    prod["size_key"] = variabledata

    prodArray.append(prod)
}

para["orderItems"] =   ("\(prodArray)")

let jsonData = try! JSONSerialization.data(withJSONObject: para )
let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)

output I'm getting ===

{"orderItems":[{"product_id":19,"size_key":" 394042394042","quantity":1},{"product_id":23,"quantity":1,"size_key":" 394042394042"}],"retailer_id":20,"status":"initial"}

just need value of orderItems as

"[{"product_id":19,"size_key":" 394042394042","quantity":1},{"product_id":23,"quantity":1,"size_key":" 394042394042"}]"

" " mising

edited Nov 27, 2019 at 9:15

vadian

286k32 gold badges378 silver badges379 bronze badges

answered Nov 27, 2019 at 8:19

saurabh tripathi

1381 silver badge7 bronze badges

1 Comment

saurabh tripathi Over a year ago

i want orderItems values in String " " .

Collectives™ on Stack Overflow

how to create json object in swift 5

4 Answers 4

Comments

2 Comments

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

2 Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related