Delete Managed Object using Core data/Restkit

Question

I have to delete local store data (orphaned objects) which is no longer returned by server. I am using the following code when initilializing object manager.

[objectManager addFetchRequestBlock:^NSFetchRequest *(NSURL *URL) {
            RKPathMatcher *pathMatcher = [RKPathMatcher pathMatcherWithPattern:@"/relative_path"];

            NSDictionary *argsDict = nil;
            BOOL match = [pathMatcher matchesPath:[URL relativePath] tokenizeQueryStrings:NO parsedArguments:&argsDict];
            if (match) {
                NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"Articles"];
                return fetchRequest;
            }

            return nil;
        }];

In the above code, 'match' condition returns TRUE. But Fetch Request doesn't delete the orphaned objects which was not returned by the server.

Answer 1

You want to use the "Fetch Request Blocks and Deleting Orphaned Objects" approach which is documented here.