Using formatters in cappuccino from Xcode

At the time of this writing, cappuccino does not support NSDateFormatter (or any other formatter) if you drag it directly in Xcode.

If you want to use a formatter in Xcode/IB (and you will want), the easiest way is to drag a regular object (the blue cube) then create a class that inherit from CPFormatter, like so:

1 @implementation DateFormatter:CPFormatter
2 
3 - (CPString)stringForObjectValue:(id)anObject
4 {
5   return [anObject dateString]; // dateString is a method in my Date category that format it like I want
6 }
7 
8 @end

Then bind your object (mostly textField) to the blue cube and you are done.

I made a screencast explaining the procedure. It's a bit cropped and not really good because I made it in a hurry.

Downloads: H264, WebM, Ogg Theora.