Thanks, everyone, for telling me about "self." On May 2, 2010, at 14:53:09, Frederick Reimer wrote:
> Wrong assumption; you would actually use "SELF" in a format string, as it is > a reserved word. So @"SELF IN %@" > > I think... > > > Fred Reimer, CCIE 23812 CISSP 107125 > mailto:frei...@freimer.org > > > > On May 2, 2010, at 4:32 PM, Frederick Reimer wrote: > >> Unfortunately, there is nothing for the NSPredicate class to go on to assume >> what object you are talking about. predicateWithFormat is a class >> method/selector/function. What object is it supposed to assume you mean if >> one is not supplied? >> >> Dan Rowley sent me an email saying you may be able to use "self." So, I >> assume this means: >> >> NSPredicate *pred = [NSPredicate predicateWithFormat: @"%K in %@", self, >> favoriteMissions]; >> >> HTH, >> >> On May 2, 2010, at 9:03 AM, Rick Mann wrote: >> >>> 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 >>>>> >>>> >>> >>> >> >> Fred Reimer, CCIE 23812 CISSP 107125 >> mailto: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
