Story with Comment

storyWithComment.m

// Defined somewhere in your headers

// Class for representing Stories
@interface Story : NSObject <KCSPersistable>
NSString *storyId; // In your mapping function this should map to "_id"
NSString *name;
NSString *reporter;
@end

// Class for representing comments
@interface Comment : NSObject <KCSPersistable>
NSString *commentId; // In your mapping function this should map to "_id"
NSString *storyId;
NSString *username;
NSString *text;
@end


// In your Submit comment view controller

// Grab a handle for the comments backend collection
KCSCollection *comments = [[[KCSClient sharedClient]
                           collectionFromString:@"comments"
                                      withClass:[Comment class]] retain];

// Build a new comment
Comment *c = [[Comment alloc] init];
c.storyId = self.currentStory.storyId;
c.username = self.userNameTextField.text;
c.text = self.commentTextArea.text;

// Save the comment to the backend
[c saveToCollection:comments WithDelegate:self];


// In your comment view controller

// This function is called when you want to pull new comments from the backend
- (void)fetchComments:
{
  Grab a handle to the comments collection
  KCSCollection *comments = [[[KCSClient sharedClient]
                             collectionFromString:@"comments"
                                        withClass:[Comment class]] retain];

  // Build a filter to match all relevant comments
  KCSQuery *q = [KCSQuery queryOnField:@"storyId" withExactMatchForValue:self.currentStory.storyId];
  comments.query = q;

  // Pull down all comments whose storyId == self.currentStory.storyId
  [comments fetchWithDelegate: self];
}


// Later...
// Called when results are ready
- (void)collection:(KCSCollection *)collection didCompleteWithResult:(NSArray *)result
{
  // Update the displayed comments with the newly fetched comments
  self.commentsArray = result;

  // ... Any other actions necessary
}