makestagram - swift list post in table view ordered from newest to old

Question

Hi everyone Im practice swift by Makeschool's makestagram project, and I want to make the newest post appear at the top of a table view to let user can see the newest post first!

can anyone help? here is my code

override func viewDidLoad() {
    super.viewDidLoad()

    timelineComponent = TimelineComponent(target: self)
    self.tabBarController?.delegate = self



        }

  func takePhoto(){
    // instantiate photo taking class, provide callback for when photo  is selected
    photoTakingHelper = PhotoTakingHelper(viewController: self.tabBarController!,callback:{ (image: UIImage?)in
        let post = Post()
        post.image.value = image!

        post.uploadPost()
        }

    )

}
override func viewDidAppear(animated: Bool) {
timelineComponent.loadInitialIfRequired()
            }

func loadInRange(range: Range<Int>, completionBlock: ([Post]?) -> Void) {

ParseHelper.timelineRequestForCurrentUser(range) {
    (result: [PFObject]?, error: NSError?) -> Void in
    if let error = error {
    ErrorHandling.defaultErrorHandler(error)
    }


    let posts = result as? [Post] ?? []


    completionBlock(posts)
}

}

}

    extension TimelineViewController: UITableViewDataSource {
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return self.timelineComponent.content.count
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return 1
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("PostCell")as! PostTableViewCell
    let post = timelineComponent.content[indexPath.section]
    post.downloadImage()
    post.fetchLikes()
    cell.post = post



    return cell

}

}

   extension TimelineViewController: UITableViewDelegate{
func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
    timelineComponent.targetWillDisplayEntry(indexPath.section)

}
      func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    let headerCell = tableView.dequeueReusableCellWithIdentifier("PostHeader")as! PostSectionHeaderView
    let post = self.timelineComponent.content[section]
    headerCell.post = post
    return headerCell
}
func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
    return 40
}

}

Answer 1

I finally figure it out!

parse's PFquery got updatedAt method

I change createdAt to updatedAt.

Now it works perfectly!