How do you make a Text Label display how many rows there are in the table

Question

I am using Core Data and want a Text Label to display how many rows there are in the table, what code would I need to enter in the class file's to do this?

Answer 1

Assuming your NSTableView's columns are bound to an NSArrayController, you can bind the value of the NSTextField label to your array controller's with controller key "arrangedObjects" and with a key path of @count. If you want to bind the text field to something like "x rows" where x is the number of rows, you would bind the "Display Pattern Value1" to the same (arrangedObjects.@count) and use "%{value1}@ rows" as the Display Pattern.

Answer 2

Set up a fetch request on your managed object context like you normally would, and call countForFetchRequest:. Don't forget to subscribe to NSManagedObjectContextObjectsDidChangeNotification so you can update it when objects are added or removed!