Re: NSComboBox Coredata bindings
Re: NSComboBox Coredata bindings
- Subject: Re: NSComboBox Coredata bindings
- From: Julien Bordet <email@hidden>
- Date: Thu, 1 Dec 2005 16:27:09 +0100
Hi,
Thanks for your help.
Note that you said you set 'Automatically prepares content' earlier,
>
basically that means that the
>
controller will keep an eye on your managed object context and update
>
itself automatically.
>
So it sees the new categories as soon as you add them.
OK. Didn't know that.
>
From what you have said so far I think your data model looks like this:
>
>
< Transaction >
>
< category > <<------------> < Category >
>
< category >
>
>
where Transaction.category is a relationship
>
and Category.category is a string (the category name...)
Yes, you understood my model very well.
I'm surprised that you can select a category from the combo box as
>
this will attempt
>
to set the string value of the Category's category attribute to the
>
category relationship
>
of the Transaction, which expects a Category (NSManagedObject).
>
So, I'd expect a validation error whenever you try to do it.
In fact, you are right. What is correct is the fact that the NSComboBox
correctly prints the categories. But, as you expected, when I select one, I
got the error message I reported in my first message.
So, from the start, the problem is not limited to adding new category, but
to category values in the Transaction object.
I use Xcode 2.1.
>
>
If your bindings for the combo box were:
>
>
content : CategoryArrayController.arrangedObjects
>
>
contentValues : CategoryArrayController.arrangedObjects.category
>
>
value : TransactionArrayController.selection.category.category
>
(note the additional .category)
>
>
Then you would be able to select the combo box entry as you are
>
trying to set a string
>
to a string, but the value won't be stored as the Transaction still
>
hasn't got a Category
>
to store.
I've tried what you said above. It still does not work. When I select a
category, I get a "An Error occurred" window (exact message in French) and a
new message,
2005-11-28 11:44:10.198 iMoney[13616] *** -[NSSelectionBinder
_didPresentModalAlert:contextInfo:] selector not recognized [self =
0x4d070f0]
I'm sure I want to use a NSComboBox, as I want the user to be able to
dynamically add categories.
Any idea ? I'd be very happy if we can get it to work, as it seems there is
no example code on the internet about that...
Many thanks
Julien
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden