Send JSON array as a parameter Alamofire - swift

Question

I'm having difficulty with a parameter which contains a Json array using Alamofire
Here is a string of my Json:
"[{\"id\":546836102,\"count\":1},{\"id\":216479424,\"count\":1}]"
Here is my code where I make the request:
let data = (params["cart"] as! String).data(using: .utf8)!
do {
if let jsonArray = try JSONSerialization.jsonObject(with: data, options : .fragmentsAllowed) as? [Dictionary<String, Int>] {
let parameters: Parameters = [
"address_id": params["address_id"] as! Int,
"delivery_day": params["delivery_day"] as! String,
"delivery_hour": params["delivery_hour"] as! Int,
"cart": jsonArray,
"via": params["via"] as! String
]
Alamofire.request(Global.baseURL + "orders/finish", method: .post, parameters: parameters, encoding: URLEncoding.default, headers: header)
.responseSwiftyJSON {
Printing out my parameters
["cart": [["id": 546836102, "count": 1], ["count": 1, "id": 216479424]], "address_id": 641589205, "delivery_day": "1399-01-20", "delivery_hour": 21, "via": "ios"]
Backend must receive the cart as below:
[
{
"id": 123456,
"count": 2
},
{
"id": 654321,
"count": 3
}
]
But instead it gets the data like this:
{
"delivery_hour" : "21",
"delivery_day" : "1399-01-20",
"cart" : [
{
"count" : "1"
},
{
"id" : "546836102"
},
{
"count" : "1"
},
{
"id" : "216479424"
}
],
"via" : "ios",
"address_id" : "641589205"
}
I have tried JSONEncoding and URLEncoding options by Alamofire but nothing seems to work and this is the closest I've gotten to the API template so far.
What am I doing so wrong here?
// MARK: - Update
So I updated to the latest version of Alamofire and still no good results :(
Here is the code:
let payload = MyParameters(address_id: 641589205, delivery_day: "1399-01-21", delivery_hour: 21, cart: items, via: "ios")
AF.request(url, method: .post, parameters: payload, encoder: JSONParameterEncoder.default, headers: .init(header), interceptor: nil).response { dataResponse in
switch dataResponse.result {
case .success(let value):
if dataResponse.response?.statusCode == 200 {
let json = JSON(value!)
completionHandler(json, nil)
} else {
print(dataResponse.response?.statusCode ?? -1)
}
case .failure(let error):
print(error)
completionHandler(nil, error.localizedDescription)
}
}
My payload looks exactly what I want it to be
{
"cart" : [
{
"count" : 1,
"id" : 546836102
},
{
"count" : 1,
"id" : 216479424
}
],
"via" : "ios",
"address_id" : 641589205,
"delivery_day" : "1399-01-21",
"delivery_hour" : 21
}
But then again the endpoint receives this:
{
"{\"delivery_day\":\"1399-01-21\",\"address_id\":641589205,\"delivery_hour\":21,\"cart\":" : {
"{\"id\":546836102,\"count\":1},{\"id\":216479424,\"count\":1}" : null
}
}

Answer 1

Using Alamofire 4, you can't send arrays using the method you've shown, as the Parameters type is [String: Any]. You're also not using the correct ParameterEncoding. If you want to send a JSON body, you need to use the JSONEncoding. What you can do is manually serialize the array into a URLRequest and make that request using Alamofire.
Additionally, if you update to Alamofire 5, Encodable parameters are now supported, so you if you can define your parameters as an Encodable type, sending them would be as easy as passing an array.
AF.request(..., parameters: [some, encodable, values], encoder: JSONEncoder.default)...