Updating NSTableView when enitiy is added to core data

Question

I have a Cocoa App that I have manually added core data to. I setup the table in Interface Builder to list the entities from the data (with NSArrayController), and this is working just fine. The problem is when I insert a new entity (via code) the table does not update until I restart the app.

What do I have to do after inserting an entity and saving the context to get the table to automatically pick up the changes?

Answer 1

I'll assume you mean you want to update your array controller's contents, allowing the table to update as a result.

Short answer: Send your array controller a -fetch: message.

Longer answer: Only entity instances added through an array controller automatically show up in its contents array when it gets its contents via a straight fetch request (ie, when its contents array isn't bound to anything, but rather you set an entity name and a MOC, possibly a predicate, and nothing else).