Question

NSManagedObject *entryObj = [self.fetchedResultsController
                         objectAtIndexPath:indexPath];

entryObj consists of four String attributes.

If I NSLog entryObj, I get the information I want. I cannot figure out how to access each of these properties individually. I read a similar post where the solution was to call “entity.” I cannot figure out how to use “entity” to access a specific attribute.

Any ideas? References? Tutorials?

Thanks in advance.

Answer 1

Properties on managed objects are KVC/KVO compliant so you can access them via:

[entryObj valueForKey:@"name"]

Alternatively you can generate a custom Core Data class with real properties to access these values. See this documentation for more information. The Xcode core data modelling tool can generate these classes for you. While you have the model open, choose “File->New File” and you should see a “Managed Object Class” item. Choose this and select the entities you wish to generate classes for.

Once you have done this and the core data entities have their class name set appropriately, you just cast the NSManagedObject to an instance of your new class and access its properties, i.e.

MyObject *entryObj = (MyObject *) [self.fetchedResultsController
    objectAtIndexPath:indexPath];
NSLog(@"Property is %@", entryObj.whatever);