Updating property of core data entity does not update outline view
Updating property of core data entity does not update outline view
- Subject: Updating property of core data entity does not update outline view
- From: Richard <email@hidden>
- Date: Wed, 28 Oct 2009 14:59:48 +0100
hey
thanks, that is exactly what i was looking for, i have got it working now
(nearly).
so, a related question. i have an outline view and when searches are
performed a new item is added to the outline view with a badge that displays
the number of search results. the outline view is bound to a tree controller
working in entity mode of type SidebarItem.
when search results arrive, i get the relevant SidebarItem from the
managedObjectContext and update the count property with the new amount. the
problem is that this does not update the outline view. if i cause the view
to be redrawn, the badge updates with the correct value. how can i get it to
do this automatically?
i tried sending a notification when the count was updated, and then
searching for the item in the outlineview when the notification is received,
but [outlineView rowForItem: ] always returns -1, so i cannot redraw the
updated row.
what am i doing wrong?
On Wed, Oct 28, 2009 at 9:23 AM, Matthew Lindfield Seager <
email@hidden> wrote:
> > could someone point me in the right direction, what is the easiest way of
> > doing this? would i have to override the text cell for the outline view,
> or
> > can i use a value transformer of some sort?
>
> I'm sure someone will correct me if (when?) I'm wrong but I've heard
> them called badges. Googling nsoutlineview badges returned a bunch of
> results & I'm sure you can find your way from there!
>
> Matt
>
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