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iOS

alex molineaux
alex molineaux
4,367 Points
Posted by alex molineaux
alex molineaux
4,367 Points

Code Challenge: Removing Friends by Tapping on a Table View Cell 2 of 3

Hi I have got myself a little stuck and cannot progress - any help would be really appreciated.

This was one of my many guesses, golly i really feel that I have not learnt a thing….

import "FavoriteMoviesViewController.h"

@implementation FavoriteMoviesViewController

  • (void)addVideoToPlaylist:(PFObject *)video { // Add custom code below!

    PFRelation *relation = [self.playlist relationforKey:@"videos"];

    [self.video addObject:relation];

}

@end

1 Answer

Dale Rivera
Dale Rivera
17,106 Points
Dale Rivera
Dale Rivera
17,106 Points

You are really close!
You just switched video and relation.
A good way to think about this challenge is thinking about how it is phrased. You should: "add the 'video' that is passed into the method to the 'relation' variable."
Translated to code this statement is: 

[relation addObject:video];

A more complete picture of the answer is this: 

#import "FavoriteMoviesViewController.h"

@implementation FavoriteMoviesViewController

- (void)addVideoToPlaylist:(PFObject *)video {
    // Add custom code below!
    PFRelation *relation = [self.playlist relationforKey:@"videos"];
    [relation addObject:video];
}

@end

So you should add the video to the PFRelation relation. What you are currently doing attempts to add the relation to the video which isn't correct.

It is also important to note the difference between instance variables and method variables. Here, we are writing code inside of a method that takes in a video parameter. To access this, we simply refer to the name of the parameter, that is, we just use video in our code. Instance variables are accessible throughout a class, and are accessed with the ``` self