Cant get array PFQuery objects from parse code block

Question

I dont know what the deal with parse is but for some reason it wont allow me to save the retrieved array into a mutable array I created. It works inside the parse code block but once outside, it displays null. Help please?

 PFQuery *query = [PFQuery queryWithClassName:@"comments"];
    [query whereKey:@"flirtID" equalTo:recipe.flirtID];
    [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        if (!error) {


            comments = [[NSMutableArray alloc]initWithArray:objects];

            // Do something with the found objects
            for (PFObject *object in objects) {

            }
        } else {
            // Log details of the failure
            NSLog(@"Error: %@ %@", error, [error userInfo]);
        }
    }];
    NSLog(@"%@",[comments objectAtIndex:0]);

Answer 1

It's actually working as it should. You should read up on how blocks work.

Edit: Try reading Apple's Documentation

You're NSLogging 'comments' before comments actually gets set. How does that work? You see, query is running in the background, and it will actually take a bit of time. It's running asynchronously . But the code outside the block will run immediately.

While the code comes before, because it's an asynchronous block, it can and will be run whenever.

Try this:

comments = [[NSMutableArray alloc]initWithArray:objects];
NSLog(@"%@",[comments objectAtIndex:0]);

The important question is, what do you want to do after the query? Looks like you want to save comments, but then what? That will determine what you do next.