RE: [Q] "auto"-incrementing integer attribute in awakeFromInsert
RE: [Q] "auto"-incrementing integer attribute in awakeFromInsert
- Subject: RE: [Q] "auto"-incrementing integer attribute in awakeFromInsert
- From: "Jon C. Munson II" <email@hidden>
- Date: Mon, 6 Apr 2009 16:02:57 -0400
- Organization: JTA Enterprises LLC
Actually, since I'm using a fetch in the routine to get the next value, the
processPendingChanges call didn't seem to be necessary (at least for my
app), so I was able to just use the disable/enable messages around the ID
portion.
When I tested that, it worked just peachy! :)
Thanks for that!
Peace, Love, and Light,
/s/ Jon C. Munson II
> -----Original Message-----
> From: Sean McBride [mailto:email@hidden]
> Sent: Monday, April 06, 2009 3:19 PM
> To: email@hidden; 'Cocoa Developers'
> Subject: Re: [Q] "auto"-incrementing integer attribute in awakeFromInsert
>
> On 4/6/09 2:10 PM, Jon C. Munson II said:
>
> >So, I agree Sean that the auto-increment set is being done in a different
> >"pass" than the actual add.
> >
> >However, it seems adding a record can be undone (and redone presumably) -
> >just need to press Undo twice.
> >
> >While that works, I don't think it is the right way to do things. And,
> one
> >shouldn't have to sprinkle custom Undo/Redo code everywhere just to
> bundle
> >the two actions together. This could be a major headache if an add
> causes
> >all kinds of child-adds too.
>
> Turns out it's easy to have it working properly. Just do this in your
> 'delay 0' method.
>
> [[self managedObjectContext] processPendingChanges];
> [[[self managedObjectContext] undoManager] disableUndoRegistration];
>
> [self setValue:[NSNumber numberWithInt:highestIdNumSoFar]
> forKey:@"idNumber"];
>
> [[self managedObjectContext] processPendingChanges];
> [[[self managedObjectContext] undoManager] enableUndoRegistration];
>
> --
> ____________________________________________________________
> Sean McBride, B. Eng email@hidden
> Rogue Research www.rogue-research.com
> Mac Software Developer Montréal, Québec, Canada
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