Re: Composite values using Core Data and Cocoa Bindings
Re: Composite values using Core Data and Cocoa Bindings
- Subject: Re: Composite values using Core Data and Cocoa Bindings
- From: Andy Shamel <email@hidden>
- Date: Wed, 27 Jul 2005 13:17:37 -0400
Fantastic!
I will give that a try.
Thanks so much,
--andy
On 7/27/05, Marcus S. Zarra <email@hidden> wrote:
> I would create a subclass of NSManagedObject for the object in question.
> Then create an accessor method that does the calculation for you. Then you
> can link the NSTextField to that accessor method.
>
> To get this to auto update you need to [self exposeBinding:] in the
> initialize method of the new NSManagedObject subclass and then set it to
> trigger on the other values it calculates off of.
>
> It sounds daunting but really is not that hard after you have done it a
> couple of times.
>
> Marcus
>
>
> On 7/26/05, Andy Shamel <email@hidden> wrote:
> >
> > I'm having a heck of a time figuring out how to get a value into an
> > NSTextField that is the sum or product of two or more attributes in
> > separate entities. For example, I have a character entity with
> > several ability scores as Int 16 attributes. Each of these scores can
> > be modified by a number of other entities. How do I make the
> > NSTextField display the sum of the original score, plus any modifiers?
> >
> > I have a feeling I will be delving into modifying the accessor methods
> > of the Character entity's subclass of NSManagedObject, but i'm not
> > sure, and am frankly unsure how to proceed if that's the case.
> >
> > Thanks so much!!
> >
> > --andy
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