`bind:toObject:withKeyPath` is actually from the `NSKeyValueBindingCreation` category on NSObject which is defined in the Appkit. If it seems to disappear then I would think it is a problem importing `AppKit.framework` somewhere. On Sep 27, 2011, at 3:22 PM, Alex Greif wrote:

I want to bind my NSTextField to my model object. In objective-c I would do something like [mytextfield bind:@"value" toObject:myperson withKeyPath:@"address" options:nil];

But I have problems doing this in MacRuby with the following snippet:

mytextfield = NSTextField.alloc.initWithFrame [20, 200, 200, 20] mytextfield.bind('value', toObject:'myperson', withKeyPath:'address')

It says that NSTextField does not have a bind method.

Do I misunderstand something, or is the bind method really missing and I have to set/remove the observers all myself?

Thanks, ALex.

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The following code prints false twice So it seems that the protocol is not applied correctly. Is this a bug or do I need some other require/framework statements? BTW the result is the same if i use "framework 'Cocoa'" -------- code ------------- framework 'AppKit' puts NSObject.alloc.init.conformsToProtocol Protocol.protocolWithName('NSKeyValueBindingCreation') puts NSTextField.alloc.initWithFrame([1,2,3,4]).conformsToProtocol Protocol.protocolWithName('NSKeyValueBindingCreation')