macOS Filtering a TableView

[BadWolf13]

I've got a tableView with a data source as an NSMutableArray. I want to filter information in this tableView by a user entered criteria, however, I can't find anything in NSTableView or NSTableView delegate that would allow me to do that. It seems the only way is to create a second array that contains the filtered(or non-filtered) results and use that as the data source. It seems like there should be an easy way to filter a TableView, given that it's probably done a lot, so am I missing something?

 

[GorillaPaws]

Take a look at NSArrayController.

 

[BadWolf13]

Unfortunately that's where I started. I found something in NSArrayController that's called Filtering, but doesn't really mean filtering in the same way that I do.

 

[BadWolf13]

Ok, so I've got my tableView that's bound to an NSArrayController. Based on what I read, I created a method that returns an NSPredicate object which is then entered under the bindings screen for FilterPredicate of my NSArrayController. However, it's raising an exception whenever I run the program. This is the error message

2010-04-22 17:18:36.174 Inventory[2387:a0f] [<Part 0x100136fa0> valueForUndefinedKey:]: this class is not key value coding-compliant for the key partsList.

This is the code for my NSPredicate method

-(NSPredicate *)tableFilter
{
	NSPredicate *aPredicate = [NSPredicate predicateWithFormat:
			@"ANY partsList.partNumber contains[c] %@", searchValue];

	return aPredicate;
}

Any thoughts on what I'm doing wrong here?