CODEWITHSUNDEEP
ioscore-dataswift
mlevi
mlevi

Reputation: 1463

Sorting CoreData in reverse chronological order with NSSortDescriptor

I have a Core Data database set up with a tableview and I'm trying to set it up where the the objects displayed in the table view are displayed in reverse chronological order. I'm trying to do this with NSSortDescriptor but can't figure out how to order it in reverse chronological order. Any ideas? Thanks.

Here's my code:

func getCoreData(){

        var appDel : AppDelegate = UIApplication.sharedApplication().delegate as AppDelegate
        var context : NSManagedObjectContext = appDel.managedObjectContext!
        var req : NSFetchRequest = NSFetchRequest(entityName: "KeptQuotes")

        var s = NSSortDescriptor(key: "quote", ascending: true)
        req.sortDescriptors = [s]

        var error : NSError?

        let fetchedResults = context.executeFetchRequest(req, error: &error) as [NSManagedObject]?


        if let results = fetchedResults {

            keptQuotes = results

        }else{

            println("Could not fetch \(error), \(error!.userInfo)")

        }

        tableView.reloadData()

    }

Upvotes: 3

Views: 2769

Answers (1)

Ian
Ian

Reputation: 12768

Setup a date attribute in your entity of type NSDate, then set this attribute as your sort descriptor and set ascending to false.

let sortDescriptor = NSSortDescriptor(key: "date", ascending: false)
fetchRequest.sortDescriptors = [sortDescriptor]

Upvotes: 8

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