swift JSONEncoder generate not valid data - json

Question

I have a simple string in swift:
let str = "{"phone": "[phone]","name": "skjfhkjdhg","username": "ksfhksdjhf"}"
I generate Data:
let data = str.data(.utf8)
and then send data to request.httpBody = data, and then send post request.
When swift transforms string to data, it adds a character "\", and server dont understand my json.
"{\"phone\": \"[phone]\",\"name\": \"skjfhkjdhg\",\"username\": \"ksfhksdjhf\"}"
In python it work good.
Help me please, I need to transform string to data without any symbols, or I need to send request without data, and with string.

Answer 1

Don´t create the data this way, it is error prone. And there is a better way.
Create a struct that holds your data:
struct Model: Codable{
let name: String
let phone: String
let username: String
}
Instantiate the model with appropriate values:
let model = Model(name: "name here", phone: "phone here", username: "username here")
Create the data from this model:
let data = try JSONEncoder().encode(model)
Then send this data via the URLRequest.
And you should add the contenttype header. Else your api won´t understand what your are sending.
let url = URL(string: "plannerok.ru/api/v1/users/register/")
var request = URLRequest(url: url!)
request.httpMethod = "POST"
request.httpBody = data
// add this
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
let session = URLSession.shared