Order of JSON node changes while making POST request Swift - json

Question

I was trying to post the following jSON body
request JSON :
let parameters = [
"createTransactionRequest": [
"merchantAuthentication": [
"name": "xxxxxxxx",
"transactionKey": "xxxxxxxxx"
],
"refId": "123456",
"transactionRequest": [
"transactionType": "authCaptureTransaction",
"amount": "5",
"payment": [
"opaqueData": [
"dataDescriptor": desc!,
"dataValue": tocken!
]
]
]
]
]
When I am trying to print(parameters) the order of node changes it looks like
["createTransactionRequest":
["refId": "123456",
"transactionRequest":
["payment": ["opaqueData": ["dataDescriptor": "COMMON.ACCEPT.INAPP.PAYMENT", "dataValue": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx="]],
"transactionType": "authCaptureTransaction",
"amount": "5"],
"merchantAuthentication": ["name": "xxxxxxx", "transactionKey":
"6gvE46G5seZt563w"]
]
]
I am getting response like
{ messages = {
message = (
{
code = E00003;
text = "The element 'createTransactionRequest' in namespace
'AnetApi/xml/v1/schema/AnetApiSchema.xsd' has invalid child element
'refId' in namespace 'AnetApi/xml/v1/schema/AnetApiSchema.xsd'. List of
possible elements expected: 'merchantAuthentication' in namespace
'AnetApi/xml/v1/schema/AnetApiSchema.xsd'.";
}
);
resultCode = Error;
};
}
This is really annoying. anyones help will be highly grateful.

Answer 1

You need to change your data structure as follow:
struct Transaction: Codable {
let createTransactionRequest: CreateTransactionRequest
}
struct CreateTransactionRequest: Codable {
let merchantAuthentication: MerchantAuthentication
let refId: String
let transactionRequest: TransactionRequest
}
struct MerchantAuthentication: Codable {
let name: String
let transactionKey: String
}
struct TransactionRequest: Codable {
let transactionType: String
let amount: String
let payment: Payment
}
struct Payment: Codable {
let opaqueData: OpaqueData
}
struct OpaqueData: Codable {
let dataDescriptor: String
let dataValue: String
}
Testing
let json = """
{ "createTransactionRequest":
{ "merchantAuthentication":
{ "name": "YOUR_API_LOGIN_ID",
"transactionKey": "YOUR_TRANSACTION_KEY"
},
"refId": "123456",
"transactionRequest":
{ "transactionType": "authCaptureTransaction",
"amount": "5",
"payment":
{ "opaqueData":
{ "dataDescriptor": "COMMON.ACCEPT.INAPP.PAYMENT",
"dataValue": "PAYMENT_NONCE_GOES_HERE"
}
}
}
}
}
"""
let jsonData = Data(json.utf8)
do {
let transaction = try JSONDecoder().decode(Transaction.self, from: jsonData)
print(transaction)
// encoding
let encodedData = try JSONEncoder().encode(transaction)
print(String(data: encodedData, encoding: .utf8)!)
} catch {
print(error)
}
{"createTransactionRequest":{"merchantAuthentication":{"name":"YOUR_API_LOGIN_ID","transactionKey":"YOUR_TRANSACTION_KEY"},"refId":"123456","transactionRequest":{"transactionType":"authCaptureTransaction","amount":"5","payment":{"opaqueData":{"dataValue":"PAYMENT_NONCE_GOES_HERE","dataDescriptor":"COMMON.ACCEPT.INAPP.PAYMENT"}}}}}