CODEWITHSUNDEEP
swiftcore-dataswift4
dreadbot
dreadbot

Reputation: 962

Swift 4 and Core Data, how do I sort fetch request?

I have a game with 500 records in core data. Each record has an id. They are all unique from 1 to 500.

In Swift 4 or 5, how do I sort the results of this fetch request? I need to sort ascending by prize.id. Thanks in advance.

func checkPrizes() {
        
        trace("checkPrizes")
        guard let appDelegate = UIApplication.shared.delegate as? AppDelegate else { return }
        
        let request: NSFetchRequest<Prize> = Prize.fetchRequest()
        //finding specific record

        let context = appDelegate.persistentContainer.viewContext

        outputText.text = ""
        do {
            prizes = try context.fetch(request)
//                try context.save()

                for item in prizes {
                    print("Prize amount: \(item.amount!)")
                    outputText.text = item.amount!
                    print("Prize id: \(item.id!)")
                    outputText.text = item.id!

                    print("Prize region: \(item.region)")
                    outputText.text = String(item.region)

                    print("Prize won: \(item.won)")
//                    outputText.text.append(String(item.won) + "\n")
                }
            print("CheckPrizes count: \(prizes.count)")
            outputText.text = "CheckPrizes count: \(String(prizes.count))"
            } catch {
                print("Failed to retrieve record")
                print(error)
            }
    }

Upvotes: 0

Views: 912

Answers (2)

davidev
davidev

Reputation: 8517

If you got your NSFetchRequest, you can use sort var sortDescriptors: [NSSortDescriptor]? , which is the sort descriptor of your fetch request.

request = [NSSortDescriptor(key: "id", ascending: true)]

Or you can just sort the array after your FetchRequest is completed.

Upvotes: 2

dreadbot
dreadbot

Reputation: 962

let sort = NSSortDescriptor(key: "id", ascending: true)
        request.sortDescriptors = [sort]

Upvotes: 0

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