Alamofire object mapper: how to parse nested array in swift - ios

Question

This is my api response:
[
[
{
"id": 24,
"request_id": "rqst5c130cae6f7609.41056231",
"business_name": "Code Viable",
"business_email": "code#viable.com",
"title": "Load",
"details": "load",
"load_description": "load",
"amount_offered": "1",
"pickup_address": "load",
"dropoff_address": "load",
"timestamp": "2018-12-14 01:51:42"
}
],
[
{
"id": 27,
"request_id": "rqst5c1325881836d2.98441728",
"business_name": "Code Viable",
"business_email": "code#viable.com",
"title": "Load",
"details": "brendan",
"load_description": "test load for brendan",
"amount_offered": "1222",
"pickup_address": "Load",
"dropoff_address": "Load",
"timestamp": "2018-12-14 03:37:44"
}
]
]
As you can see, it is an array wrapped inside of an array, I have an object mapper setup already for the inner array, like this:
struct JobResponseDataObject: Mappable {
init?(map: Map) {
}
var id: Int?
var requestId: String?
var businessName: String?
var businessEmail: String?
var title: String?
var details: String?
var loadDescription: String?
var amountOffered: String?
var pickUpAddress: String?
var dropOffAddress: String?
var timestamp: String?
mutating func mapping(map: Map) {
id <- map["id"]
requestId <- map["request_id"]
businessName <- map["business_name"]
businessEmail <- map["business_email"]
title <- map["title"]
details <- map["details"]
loadDescription <- map["load_description"]
amountOffered <- map["amount_offered"]
pickUpAddress <- map["pickup_address"]
dropOffAddress <- map["dropoff_address"]
timestamp <- map["timestamp"]
}
}
If the parent has a name for it's child array, then I would create another mapper for the top level. But in this case, there is not a name for the outer array, what do I need to do to make the alamofire .responseArray call work?
Alamofire.request(JOB_REQUEST_BASE_URL, method: .post, parameters: parameter, encoding: URLEncoding(), headers: nil).responseArray { (response: DataResponse<[JobResponseDataObject]>) in
}
}
Thanks

Answer 1

Your JSON object have nested Array. So to parse that you can do it two ways. One way to do this is to parse it as nested array.
DataResponse<[[JobResponseDataObject]]>
And your code will looks like this.
Alamofire.request(JOB_REQUEST_BASE_URL, method: .post, parameters: parameter, encoding: URLEncoding(), headers: nil).responseArray { (response: DataResponse<[JobResponseDataObject]>) in
//...
}
Suggestion: So far what I can understand from JSON, it should not be in nested Array. If you only need to add one object in nested array, you can achieve same with simple array.
Second Way
If you only have one object in nested array. You can also parse it as following.
requestId <- map["0.request_id"]
"0." is here to get first object of inner array.
Hope this helps :)