Post a json patch in Swift 5 - swift

Question

I'm testing an api call in Swift with Patch to update an object partially.
It worked well with Postman
PATCH http://localhost:5000/api/accounts/eca9c1b05fb24ca192afe370aa5a1965
[
{
"op": "add",
"path": "/firstname",
"value": "wakaka"
}
]
Here's my playground:
let urlString = "http://localhost:5000/api/accounts/eca9c1b05fb24ca192afe370aa5a1965"
let url = URL(string: urlString)
var request = URLRequest(url: url!)
// guard var request = request else { return nil }
request.addValue("application/json", forHTTPHeaderField: "Accept")
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("gzip, deflate, br", forHTTPHeaderField: "Accept-Encoding")
request.httpMethod = "PATCH"
let jsonPatch = "[{\"op\" : \"add\", \"path\" : \"/firstname\", \"value\": \"my first name\"}]"
do {
let encodedResult = try JSONEncoder().encode(jsonPatch)
print(encodedResult.debugDescription)
request.httpBody = encodedResult
print(request.httpBody?.description)
} catch let error {
print(error.localizedDescription)
}
// decoding
URLSession.shared.dataTask(with: request) { (data, response, error) in
if error != nil {
print("err: ",error.debugDescription)
return
}
// handling api's errors
if let res = response as? HTTPURLResponse {
print(res.statusCode)
switch res.statusCode {
case 400:
print("400")
// completion(.failure(ApiError.badRequest))
return
case 409:
print("409")
return
case 422:
print("422")
print(res.debugDescription)
return
default:
break
}
}
// OK
do {
let result = try JSONSerialization.jsonObject(with: data!, options: [])
print("json:", result)
} catch let jsonError {
print("error:", jsonError.localizedDescription)
}
}
.resume()
The result I got:
<NSHTTPURLResponse: 0x600000921320> { URL: http://localhost:5000/api/accounts/eca9c1b05fb24ca192afe370aa5a1965 } { Status Code: 422, Headers {
"Content-Length" = (
350
);
"Content-Type" = (
"application/problem+json; charset=utf-8"
);
Date = (
"Thu, 10 Jun 2021 15:59:29 GMT"
);
Server = (
Kestrel
);
} }
That weird when it returns 422 while my call on Postman works well. Thanks for any advice!