Re: [Rubycocoa-talk] NSProxy doesNotRecognizeSelector:copyWithZone: [SOLVED]

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Hi Eloy,

I'm using NSDecimalNumber to avoid rounding problem. I'm not sure whether it's soo important in that case. But imho keypaths like @sum.retail_price can produce side effects.

Thanks!
Ferhat

----- Original Message ----
From: Eloy Duran <e....@su...>
To: rub...@li...
Sent: Sunday, January 20, 2008 12:45:11 PM
Subject: Re: [Rubycocoa-talk] NSProxy doesNotRecognizeSelector:copyWithZone: [SOLVED]

Normally I would say try: OSX::NSDecimalNumber.decimalWithDecimal(content),
but for some reason it expects 6 arguments instead of 1.

Ok scrap that. It's because it expects a NSDecimal structure.
How to create one I haven't found yet though....

Eloy

On 20 jan 2008, at 09:13, Ferhat Ayaz wrote:

ah! ok. Thank you very much. This does the trick. 

BTW, has somebody a more elegant solution to make a decimal number?

class ProductProxy < OSX::ActiveRecordProxy
  on_get :retail_price do |content|
    OSX::NSDecimalNumber.alloc.initWithString(content.to_s)
  end
end

Thanks,
Ferhat

----- Original Message ----
From: Eloy Duran <e....@su...>
To: rub...@li...
Sent: Sunday, January 20, 2008 2:19:46 AM
Subject: Re: [Rubycocoa-talk] NSProxy doesNotRecognizeSelector:copyWithZone:

Hi,

Have you tried using a on_get filter to change the value that is returned ActiveRecord into something the table column wants?
For an example of this see: http://www.superalloy.nl/blog/2007/06/09/added-on_get-filter-class-method-to-activerecordproxy/

Eloy

On 20 jan 2008, at 01:55, Ferhat Ayaz wrote:

Hi,

I think I have an idea whats going wrong. I'm binding the arrangedObjects of  ActiveRecordSetController to NSTableView column (usual stuff).

But this is interesting:  the decimal column (in my case the price of product) is the problem.

I used an NSNumberFormatter in the table column cell to confirm this. And, indeed, I got this error:

 OSX::OCException: NSInternalInconsistencyException - Cannot create number from object <RBObject: 0x228b3b0> of class RBObject

I think RBObject is in this case not the right type, is it?

If I do not bind the price column, everything work fine.

Is this a bug or am I just poor of knowledge?

Thanks,
Ferhat

----- Original Message ----
From: Ferhat Ayaz <fer...@ya...>
To: rub...@li...
Sent: Saturday, January 19, 2008 7:35:50 PM
Subject: Re: [Rubycocoa-talk] NSProxy doesNotRecognizeSelector:copyWithZone:

Hi Eloy,

thank you for your reply. I'm trying to access an already existing database created by a rails application. The migration for the products table looks like this

    create_table :products do |t|
      t.column :title, :string
      t.column :description, :text
      t.column :image, :string
      t.column :price, :decimal, :null => false, :precision => 8, :scale => 2  
      t.column :asset, :decimal, :null => false, :precision => 8, :scale => 2  
      t.column :accepts_contract, :boolean, :default => true 
      t.column :rank, :integer
      t.column :manufacturer_id, :integer
      t.column :created_at, :datetime
      t.column :updated_at, :datetime
    end

 (There are also other tables which I don't care for my rubycocoa application)

Although there is a manufacturer_id, I didn't generate Manufacturer.rb using the generate.rb script (hint). This is really everything I've done.

The following line causes the exception

@products = Product.find(:all).to_activerecord_proxies

If I try to use the first version without active_record, say:

@products = []

everything is ok.

The kvc_accessor :products is bind to the contentArray of an ActiveRecordSetController.

RubyCocoa Version: 0.12.0

Thanks.
Ferhat

----- Original Message ----
From: Eloy Duran <elo...@gm...>
To: rub...@li...urceforge..net
Sent: Saturday, January 19, 2008 7:02:44 PM
Subject: Re: [Rubycocoa-talk] NSProxy doesNotRecognizeSelector:copyWithZone:

Hi Ferhat,

Unfortunately that error is too much of a general problem to be able to diagnose for me.
Could you try to get some more detailed info on which code is causing the problem?

Cheers,
Eloy

On 18-jan-2008, at 22:59, Ferhat Ayaz <fer...@ya...> wrote:

Hi,

I'm trying to run an activerecordsupport application. I have added an ActiveRecordSetController ArrayController in IB and set the class name properly (in my case ProductProxy).

here my simple controller code (inspired by the blog article by Eloy Duran)

require 'osx/cocoa'

class CNController < OSX::NSWindowController
  kvc_accessor :products

  def init
    if super_init
      ActiveRecord::Base.establish_connection({
       :adapter => 'mysql',
       :host => 'localhost',
       :username => 'root',
       :password => '',
       :database => 'xyz_development'
      })
      @products = Product.find(:all).to_activerecord_proxies
      return self
    end
  end
end

I have generated product.rb and product_proxy..rb using the handy generate.rb script. 

So, the error message I get is the following

[Session started at 2008-01-18 22:51:02 +0100.]
/Users/ayaz/Projects/CNClient/build/Debug/CNClient.app/Contents/Resources/rb_main.rb:24:in `NSApplicationMain': NSInvalidArgumentException - *** -[NSProxy doesNotRecognizeSelector:copyWithZone:] called! (OSX::OCException)
	from /Users/ayaz/Projects/CNClient/build/Debug/CNClient.app/Contents/Resources/rb_main.rb:24

The Debugger has exited with status 1.The Debugger has exited with status 1.

Any idea?

Thanks!
Ferhat

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