[MacRuby-devel] Some general MacRuby/Cocoa questions

Timo Springmann timo at orangeorb.de
Fri Nov 11 13:07:13 PST 2011

Hi List,

I'm new to the list and currently I'm struggling with MacRuby (or better: Cocoa). I've done some Ruby development (mostly Rails) in the past and think my knowledge about ruby is okay. But I've no idea about Cocoa and all I know about C are a few fragments C++ back from university...

Currently I try to teach me some MacRuby/Cocoa with hacking together a small desktop application. Matt Aimonetti's book is already ordered and I hope it will arrive next week. I did some reading back when it was available for free on the net. So I already know some (small) things but actually I've some questions and I hope I'll find some answers on the list. If this is the wrong place to ask such questions, please let me know.

At the moment my application mostly consists of a NSTableView bound to a CoreData Entity. Works like expected. In a next step I would like to extend my application to open another window to enter the details for adding content. I've designed the window in the interface builder (Another.xib) and added another ruby file to my project with the following content: 

class AnotherController < NSWindowController
  def windowNibName()
    return "Another"
I added a NSObject in IB and set it's class to AnotherController. In my AppDelegate.rb I've added a method which gets called when selecting a menuitem:

def addItem(sender)
  newWindow = AnotherController.alloc.init

Now I can select the menu entry, which is calling addItem, which then opens the other window. This is working, but it doesn't feel right. Especially the AnotherController things seems a little bit odd to me. Is there a better way to do this? What are the next steps? What would be the best way to add another record to my CoreData based on the form values of my second window?

I find it generally hard to imagine how to arrange a files in a larger MacRuby/Cocoa project. Is there some good reading on this topic?



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