Core data. Programmatically setting relationships
Core data. Programmatically setting relationships
- Subject: Core data. Programmatically setting relationships
- From: Steven Hamilton <email@hidden>
- Date: Sun, 1 Jun 2008 18:28:04 +1000
Hi folks,
Back again with more Core Data puzzles.
I have entities like so;
Account;
NSString name
relationship credit
relationship debit
Transaction;
NSString name
NSDate date
relationship toAccount (reverse of credit in Account entity)
relationship fromAccount (reverse of debit in Account entity)
I have a tableview with a custom datasource as I have to mung data
between the Object Model and the view. Using the datasource and
delegate methods I can display data fine and I can alter and set the
attributes name and date.
What I can't do is set change the relationships. In my tableView I'm
displaying the Account name in the toAccount and fromAccount columns.
I want to be able to type a new Account.name in there and have the
Transaction object update the relationship to the new Account
accordingly. Reading the core data docs I can't for the life of me
figure out how to do this. I believe I need to take the name from the
tableColumn, figure out which account it belongs to then somehow set
that as the relationship by using KVC.
Any tips?
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