Swift Bindings won't work Xcode 6 Beta 5

Question

I\'m doing a simple test program using bindings in Swift on OSX. Having an NSTableView, NSArrayController and a model class I try to hook them up together, but without succe

Answer 1

You have to select the Table View Cell and bind it's value to Table Cell View with the appropriate objectValue. I don't know how to get rid of the exclamation-mark / warning, but it works.

Answer 2

Are you using NSCell or NSView based tables? How you set up bindings is different for these. What you are doing looks correct for NSCell based tables.

When I set up a NSTableView today, it was a NSView based table, so I had to select the TextField and bind to "Table Cell View" with a Model Key Path "objectValue.name"

See the Table View Programming Guide for Mac: Populating a Table View Using Cocoa Bindings documentation

Answer 3

Beta 5 requires you to explicitly set your properties as dynamic in order for KVO/bindings to work:

dynamic var firstName = "Brook"

See the Dynamic declaration modifier section of the release notes for more information.

The dynamic keyword enables KVO, proxying, and other advanced Cocoa features to work reliably with Swift declarations.