CODEWITHSUNDEEP
swiftclasssortingtableviewnsarraycontroller
Josch Hazard
Josch Hazard

Reputation: 343

NSArrayController sorting: "this class is not key value coding-compliant for the key"

I´m trying to setup sorting in NSTableView. NSArrayController is bound to an Array: dynamic var dataArray = [Person](). Populating the tableView is working so far, but coming to sorting I´m stuck in this error. My setup is:

1: in IB: ArrayController, Binding Inspector:

   - Sort Descriptors bind to ViewController
   - Model Key Path: self.customSortDescriptors

2: in IB: tableView, Binding Inspector:

( Here I´m getting error: "this class is not key value coding-compliant for the key customSortDescriptors.")

   - Sort Descriptors bind to ArrayController
   - Controller Key: arrangedObjects
   - Model KEy Path: customSortDescriptors

3: in IB: Column "Name", Attributes Inspector:

   - Sort Key: name
   - Selector: caseInsensitiveCompare:

In ViewController:

class ViewController: NSViewController {

    @IBOutlet var arrayController: NSArrayController!

    @IBOutlet var tableView: NSTableView!

    dynamic var dataArray = [Person]()

    dynamic var customSortDescriptors = [NSSortDescriptor(key: "name", ascending: true, selector: #selector(NSString.localizedStandardCompare(_:)))];

    override func viewDidLoad() {
        super.viewDidLoad()

        dataArray.append(Person(name: "Noah", familyName: "Vale", age: 72))
        dataArray.append(Person(name: "Sarah", familyName: "Yayvo", age: 29))
        dataArray.append(Person(name: "Shanda", familyName: "Lear", age: 45))

    }

}

Everything works without errors until I set the second step from above: 2: in IB: tableView, Binding Inspector:Then I´m getting error: this class is not key value coding-compliant for the key customSortDescriptors.

Person class:

class Person : NSObject {
    var name:String
    var familyName:String
    var age = 0

    override init() {
        name = "name"
        familyName = "family"
        super.init()
    }

    init(name:String, familyName:String, age:Int) {
        self.name = name
        self.familyName = familyName
        self.age = age
        super.init()
    }
}

This is a demo project: https://drive.google.com/file/d/0BwRghT926ZpyMVhZMHJqTGFOS3c/view

Upvotes: 1

Views: 732

Answers (1)

vadian
vadian

Reputation: 285190

The error occurs because the array controller doesn't have a property customSortDescriptors

Bind tableView.sortDescriptors to arraycontroller.sortDescriptors (controllerKey!).

enter image description here

However if you want to enable column sorting by clicking on the header add values for Sort Key and Selector in the table column:

enter image description here

In this case you need only the binding from table view to array controller as in the first image.

Upvotes: 2

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