> The pop up has selectedObject bound to Purchase Order Array Controller 2 > selection.orderReference > > ... > > At the moment the content Object is bound to selection.orderReference of the > Purchase Order Array Controller.
If you're binding the content object(s), this is wrong. Again, you want the popup's *selected object*. bound to "Purchase Order Array Controller.selection". > If I leave the model path empty, then I get an extra line in my pop up with > <_NSControllerObjectProxy: 0x143e450> > and it doesn't auto select the chosen Purchase ORder from the previous > window. If I put orderReference in the model path then the pop up itself > displays the way I intended, Okay, it *displays* the way you intended, but it's still designating the orderReference string as the selected object. This is wrong. I believe the confusion is partly my own because it's not in front of me and this thread spans several days. :-) The popup can be configured in various ways (for maximum flexibility and confusion :-)). For simplicity, how about this? Remove all popup bindings so you're starting clean. Bind the popup's Content Values to Purchase Order Array Controller's arrangedObjects.orderReference. Bind the popup's Selected Value to the PO controller's selection.orderReference. With this set of bindings, the PO array controller's selection management should work perfectly. This assumes the Line Item array controller is also configured properly, so to verify your popup's configuration, I'd disconnect the Line Item controller's content binding for now just to test this. > correct, I think part of my problem is I am used to working with MySQL > databases, and I'm thinking along the lines of joining across a value, I > think I'm getting a bit confused between concepts, Yeah, forget all that. It has nothing to do with Core Data because Core Data is not an RDBMS (per the documentation). It has many similarities but it has a number of very important differences. They (the documentation team and developers) have coined the phrase, "object graph management and persistence framework". Take it as gospel. Repeat after me: Core Data is NOT an RDBMS. :-) > Thanks, I was considering it all as Arrays, based on the fact that they are > called Array Controllers, but an Array Controller can also use a Set as a > datasource, (datasource not used here in the cocoa sense, ) Yes. Core Data was added in 10.4, the Bindings mechanism was added in 10.3. At the time, an array controller controlled arrays (I believe, but I may be wrong). It just wouldn't do to rename it "NSArrayAndSetController" or to add another controller dedicated to sets, but I can see the source of confusion. :-) Another important aspect was added, too, which I'll mention in a moment. > OK, so now I tried to bind the Purchase Order Items Array Controller (which > is your line items I believe), as follows: > content set -> Purchse Order Array Controller > controller key -> selection > model path -> empty ... > But I'm still getting an error when trying to use the bindings you suggested > above, now it doesn't like the NSSet, > 2008-10-30 12:30:55.532 powizard[13245] Cannot create NSSet from object > <_NSControllerObjectProxy: 0x1646580> of class _NSControllerObjectProxy > 2008-10-30 12:30:55.532 powizard[13245] *** Uncaught exception: > <NSInternalInconsistencyException> Cannot create NSSet from object > <_NSControllerObjectProxy: 0x1646580> of class _NSControllerObjectProxy Have I misspoken somewhere? I can't find where I might have, but you quoted me saying, "... your Line Item controller's content should be bound to the Purchase Order controller's 'selection.lineItems'." I meant for your Items controller's Content Set binding to be bound to Purchase Order Array Controller's selection.lineItems (or whatever your to-many relationship to your items set is called). The binding you specified above does not follow this. > I do appreciate all your help. I'm hoping if I can get this one working I'll > be able to work out others myself. Been there. Once it clicks, you'll enjoy a brief euphoric rush, followed by a strong desire for a shot or three of liquor. Once that's out of your system, a lot of other Bindings-related stuff will make a lot more sense. Stick with it. -- I.S. _______________________________________________ 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 [EMAIL PROTECTED]
