I need to sort an array of JSON objects.
but it is needs to be translated from a literal meaning to a numeric meaning.
for example
object["status"]
"New" = 1
"Open" = 2
"Closed" = 3
/// I need to translated in here some where
var sortedOrders = orders.sort { $0["status"].doubleValue < $1["status"].doubleValue }
You could do this with an enum.
enum Status: Int {
case new = 1
case open = 2
case closed = 3
case unknown = 99
init(string: String) {
switch string {
case "new", "New": self = .new
case "open", "Open": self = .open
case "closed", "Closed": self = .closed
default:
self = .unknown
}
}
}
To use the enum, you could initialize like this:
var myStatus = Status(string: object["status"])
And use it like this:
print(myStatus) // prints "new"
print(myStatus.rawValue) // prints "1"
Edit: Since the enum has an underlying type of Int, to accomplish your sort you can compare the resulting Status directly (Thanks to this question https://stackoverflow.com/a/27871946/1718685):
var sortedOrders = orders.sort { Status(string: $0["status"]) < Status(string: $1["status"]) }
Here's one way:
let statuses = [ "New", "Open", "Closed" ]
var sortedOrders = orders.sort { (statuses.index(of: $0["status"] ?? "") ?? 99) < (statuses.index(of: $1["status"] ?? "") ?? 99) }
This will determine the index of each status within the statuses array. 99 will be used for unknown or missing statuses so any unknown statuses will appear at the end of the list.
