Hello, all.
I came up with a problem where my entity Invoice has a toMany relation to an
entity called, ItemXInvoice, which hold the quantity and the total price, so
when I create an Invoice I add ItemXInvoice's when clciking an add button,
these ItemXInvoice's are stored in a NSArrayController. then wen I click the
save button for the invoice I do the following:
if(_newInvoice == nil){ //If its equal nil then I create a new MO
_newInvoice = [NSEntityDescription
insertNewObjectForEntityForName:@"Invoice" inManagedObjectContext:[self
managedObjectContext]];
//Setting the Relationship Witht the User.
[(User *)[[[parent _userListArrayController] selectedObjects]
objectAtIndex:0] addToInvoicesObject:_newInvoice];
//Settting the RelationShip To the Customer.
[(Client *)[[_clientsArrayController selectedObjects]
lastObject] addToInvoicesObject:_newInvoice];
}
//Set the creationItemPrice for each ItemXInvoice
for(ItemXInvoice * acutalItem in [_itemsArrayController
arrangedObjects]){
[acutalItem setValue:[acutalItem
valueForKeyPath:@"toItem.unitPrice"] forKey:@"creationItemPrice"];
[acutalItem setValue:[self getNewStatusEntity]
forKey:@"toStatus"];
}
[_newInvoice addToItemsXInvoice:[NSSet
setWithArray:[_itemsArrayController arrangedObjects]]];
...
...
so then I jsut save the managedObjectContext, and there is no error.
then when I want to check the invoice, I get the NSSet from the relation ship
like this:
NSArrayController * ctr = [(InvoiceLayoutViewController *)object
_invoicesArrayController];
NSSet * temp = [(Invoice *)[[ctr selectedObjects] lastObject]
valueForKey:@"toItemsXInvoice"];
NSLog(@"Changed selection %i",[temp count]);
and the output I get is a 0, and sometimes, I see a 2 or 1, but normally its
just 0, and of course I can't see the description of each invoice.
I tried then saving first the ItemXIvnoices from the NSArrayController, but
still same effect I get an empty set from the Invoice M.O,
what can I do? what am I doing wrong?
Thx
Gustavo
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