KVC get lastPathComponent from string which is the property of object

Question

I have e.g. 5 MyFile objects in my NSArray. Each of these 5 objects has property path.

MyFile *myFile ...;

NSString path = myMyFile.path;

So using KVC I can get the properties form all my 5 objects in the array:

NSArray *folders = [[PNFolder MR_findAllWithPredicate:predicate] valueForKey:@"path"];

so code above will return paths instead of MyFile objects and this is ok for me.

But, how can I using the lastPathComponent here as well to make my array return me just folder name instead of full path. I mean using KVC. or do I need to write cycle?

that shouldn't work as you use valueForKey on the array instead of valueForKeyPath — Daij-Djan, May 17 '14 at 12:26

score 1 · Answer 1 · answered May 17 '14 at 12:19

What you are using is KVC, not KVO (coding, not observing), though in the case of NSArray it's an explicitly stated method (valueForKey:). It calls the method on the destination object(s) and returns the contents. So, you can use it with lastPathComponent.

Indeed, you should be able to use pure KVC via valueForKeyPath: with path.lastPathComponent.

score 1 · Accepted Answer · answered May 17 '14 at 12:27

1

use valueForKeyPath with the array

NSArray *folderNames = [[PNFolder MR_findAllWithPredicate:predicate] valueForKeyPath:@"path.lastPathComponent"];

answered May 17 '14 at 12:27

Daij-Djan

49,552
17
113
135

KVC get lastPathComponent from string which is the property of object

2 Answers2