I saw that, I had hoped that by not specifying an attribute, it would mean the object itself, not an attribute on the object.
On May 2, 2010, at 05:58:39, Frederick Reimer wrote: > The manuals for this give the following example: > > NSPredicate *inPredicate = > [NSPredicate predicateWithFormat: @"attribute IN %@", > aCollection]; > > It looks like you are missing the attribute... If attribute can vary, you > can use a %K and a NSString value representing the attribute name (it is not > automatically enclosed in quotes as %@ values are). > > HTH, > > Fred > On May 2, 2010, at 8:27 AM, Rick Mann wrote: > >> Hi. >> >> I have two entities: Mission and Favorite. Favorite has a single relation to >> Mission. I need to fetch all Mission objects that exist in Favorite. I'm >> using an NSFetchResultsController. >> >> I created an array with all the Mission objects found in the Favorite >> entity. Then I tried to create a predicate like this: >> >> NSPredicate* pred = [NSPredicate predicateWithFormat: @"in %@", >> favoriteMissions]; >> >> and use that on a fetch of Mission objects. But it complains that it can't >> parse that format string. >> >> Clearly, this approach isn't going to work. I could store the Mission's key >> in the Favorite table instead, but that's less elegant. Might be the only >> way to go. >> >> Any suggestions? >> >> tia, >> Rick >> >> _______________________________________________ >> >> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >> >> Please do not post admin requests or moderator comments to the list. >> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >> >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/cocoa-dev/freimer%40freimer.org >> >> This email sent to frei...@freimer.org >> > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
