Namaste! OK, I solved this one.
The issue is that I have to use a different MOC from the NSApp Delegate's MOC. Because of that, the object was in a different MOC than expected and thus the error. Fetching the object out of the needed MOC solves the issue. Peace, Love, and Light, /s/ Jon C. Munson II > -----Original Message----- > From: cocoa-dev-bounces+jmunson=his....@lists.apple.com [mailto:cocoa-dev- > bounces+jmunson=his....@lists.apple.com] On Behalf Of Jon C. Munson II > Sent: Wednesday, May 13, 2009 10:55 AM > To: cocoa-dev@lists.apple.com > Subject: RE: Adding records to a child entity > > Namaste! > > Well, since no-one has answered this (don't know if more info is needed), > let me phrase this a different way. > > There are two entities, A, and B. A has a to-many relationship with B. > For > the sake of discussion, I'll call the inverse relationship relA (which is > an > attribute of entity B). > > A window is built to act as a form for data entry for A. This is > accomplished one record at a time (regular form view). Entity B is > presented as a tableview on the form for A. Fairly standard arrangement. > > Two array controllers are present to back the form and the tableview. > > Now, files are to be dropped on the form to create records in B and thus > associated with A. I'm using the managedObjectContext to accomplish this > and not adding via the array controller(s). > > When one goes to programmatically add B objects, what is the proper way to > set relA for a new entity B? > > newEntityB.relA = ? > > With the knowledge I've got, I tried a few things and didn't get anywhere. > The code stops on a call to: > > _PFManagedObject_coerceValueForKeyWithDescription > > This results in an objc_exception_throw error. Going up the stack gets > back > to the line around which this question revolves. > > I am attempting to get the current A out of the backing array controller, > and I suspect it isn't returning the "true" object. This is the line of > code cited in the OP. > > Now, I have a drop operation in another form where I programmatically add > both A and B and don't have an issue there. I believe because A is > created > at that moment and is therefore "true." > > My guess is there's something about the object (the term "proxy" is coming > to mind) that isn't quite right or needs to be transformed/cast somehow... > > Again, any help/input appreciated. > > Thanks! > > Peace, Love, and Light, > > /s/ Jon C. Munson II > > > -----Original Message----- > > From: cocoa-dev-bounces+jmunson=his....@lists.apple.com [mailto:cocoa- > dev- > > bounces+jmunson=his....@lists.apple.com] On Behalf Of jmun...@his.com > > Sent: Tuesday, May 12, 2009 9:24 PM > > To: cocoa-dev@lists.apple.com > > Subject: Adding records to a child entity > > > > Namaste! > > > > I'm having a wee bit of difficulty adding records to a child entity. > > > > The situation is this: I'm implementing drag-n-drop of files onto a > > tableview I have on a window. The tableview holds a list of files > > that are related to the parent record. > > > > My program chokes on the line where I set the relationship: > > > > newFileItem.relPattern = [[acPattern selectedObjects] > > objectAtIndex:0]; > > > > There is no error text in the console, and the code dies somewhere in > > the core data stuff (I assume) as going up the call stack drops me on > > that line. I am guessing the call to retrieve the current parent > > record isn't returning the correct object. However, I'm not sure how > > to get around this. > > > > As a secondary question, I wasn't able to specifically get the > > tableview to accept the drop - only the main window. Is there any way > > to achieve that behavior solely for the tableview, or is registering > > the window the only way? > > > > Any help is greatly appreciated. > > > > Thanks! > > > > Peace, Love, and Light, > > > > /s/ Jon C. Munson II > > > > _______________________________________________ > > > > 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/jmunson%40his.com > > > > This email sent to jmun...@his.com > > _______________________________________________ > > 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/jmunson%40his.com > > This email sent to jmun...@his.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. 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