Display an image in a cell when the content was created in Parse within the last week - In Swift

Question

So let me explain, I am using Parse, which holds some film reviews for me. I am populating these into a UITableView controller from Parse. This all works fine - no issues.

What I'd like to do...

Display another image in the cell (held locally) only when that object was created in Parse within the last week. So essential, the additional image I want to add is a small banner saying 'New'. If I added the film to my Parse database on the 1st of the month, then I want this 'New' image banner to also be displayed for the next 7 days in the cell. On the 8th day, the 'New' image banner removes and it just displays the cell as normal.

I know there is a automatic column in Parse that gets created for every object called "createdAt", so I assume this is the part I need to work with. I just can't figure out how to add this as code, as I've never really worked with Dates from Parse.

Below is how the cell would be displayed for reference:

So I just want that 'New' image in red displayed for 7 days from the "createdAt" date from Parse.

Can anyone help show me how to add this code?

Thanks in advance.

UPDATED:

EDIT: My CustomTableViewCell.swift

class CustomTableViewCell: PFTableViewCell {

@IBOutlet weak var filmNameLabel: UILabel!

@IBOutlet weak var filmReleaseDateLabel: UILabel!

@IBOutlet weak var directedByLabel: UILabel!

@IBOutlet weak var cellFilmImage: PFImageView!


// MARK: - Star Rating Images

@IBOutlet weak var star1: UIImageView!

@IBOutlet weak var star2: UIImageView!

@IBOutlet weak var star3: UIImageView!

@IBOutlet weak var star4: UIImageView!

@IBOutlet weak var star5: UIImageView!


@IBOutlet weak var bannerView: UIImageView!



func bindData(filmObject: PFObject) {

    if let filmName = filmObject["FilmName"] as? String {
        filmNameLabel.text = filmName
    } else {
        filmNameLabel.text = "Untitled"
    }

    if let dateReleased = filmObject["DateReleased"] as? String {
        filmReleaseDateLabel.text = "In UK cinemas \(dateReleased)"
    } else {
        filmReleaseDateLabel.text = "N/A"
    }

    if let directedBy = filmObject["DirectedBy"] as? String {
        directedByLabel.text = "Directed by \(directedBy)"
    } else {
        directedByLabel.text = "N/A"
    }

    // Show the banner if the object was created within the last 7 days
    if let createdAt = filmObject["createdAt"] as? NSDate {
        let calendar = NSCalendar.currentCalendar()
        let sevenDaysAgo = calendar.dateByAddingUnit(.Day, value: -7, toDate: NSDate(), options: [])

        // Show banner if sevenDaysAgo <= createdAt
        if sevenDaysAgo!.compare(createdAt) != .OrderedDescending {
            // Show the banner imageView
            bannerView.hidden = false
        } else {
            bannerView.hidden = true
        }
    } else {
        bannerView.hidden = true
    }



    // MARK: - Star Rating System
    if let ourRating = filmObject["OurRating"] as? Double {

        star1.image = getStarImage(1, forRating: ourRating)
        star2.image = getStarImage(2, forRating: ourRating)
        star3.image = getStarImage(3, forRating: ourRating)
        star4.image = getStarImage(4, forRating: ourRating)
        star5.image = getStarImage(5, forRating: ourRating)

    }

    let imageFromParse = filmObject.objectForKey("filmPosterImage") as? PFFile
    imageFromParse!.getDataInBackgroundWithBlock({ (imageData: NSData?, error: NSError?) -> Void in
        let image: UIImage! = UIImage(data: imageData!)!
        self.cellFilmImage?.image = image
    })

}

}

My TableViewController.swift showing cellForRowAtIndexPath

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath, object: PFObject?) -> PFTableViewCell {

    var cell = tableView.dequeueReusableCellWithIdentifier("Cell") as! CustomTableViewCell!
    if cell == nil {
        cell = CustomTableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "Cell")
    }

    if object != nil {
        cell.bindData(object!)
    }

    return cell
}

Answer 1

Should be as straight-forward as adding the UIImageView to your cell (via storyboard prototype, xib, or whatever you like) with the banner loaded from your project's image assets.

Initialize the banner imageView to be hidden and then in your tableView's cellForRowAtIndexPath check to see if the associated review was created within the last 7 days. Depending on if you use a standard UITableView and query for the reviews yourself, or if you use a PFQueryTableViewController from the ParseUI framework, the specific implementation will vary, but the gist of it will be the following.

let calendar = NSCalendar.currentCalendar()
let sevenDaysAgo = calendar.dateByAddingUnit(.Day, value: -7, toDate: NSDate(), options: [])

if let reviewDate = object?.createdAt {
    // sevenDaysAgo <= reviewDate
    if sevenDaysAgo.compare(reviewDate) != .OrderedDescending {
        // Show the banner imageView
        cell.bannerView.hidden = false
    }
}

Edit: Here is the updated version of cellForRowAtIndexPath and CustomTableViewCell

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath, object: PFObject?) -> PFTableViewCell {
    var cell = tableView.dequeueReusableCellWithIdentifier("Cell") as! CustomTableViewCell!
    if cell == nil {
        cell = CustomTableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "Cell")
    }

    if object != nil {
        cell.bindData(object!)
    }
    return cell
}

class CustomTableViewCell: PFTableViewCell {

    @IBOutlet weak var filmNameLabel: UILabel!
    @IBOutlet weak var filmReleaseDateLabel: UILabel!
    @IBOutlet weak var directedByLabel: UILabel!
    @IBOutlet weak var bannerView: UIImageView!
    // ... other outlets

    func bindData(filmObject: PFObject) {

        if let filmName = filmObject["FilmName"] as? String {
            filmNameLabel.text = filmName  
        } else {
            filmNameLabel.text = "Untitled"
        }

        if let dateReleased = filmObject["DateReleased"] as? String {
            filmReleaseDateLabel.text = "In UK cinemas \(dateReleased)"  
        } else {
            filmReleaseDateLabel.text = "N/A"
        }

        if let directedBy = filmObject["DirectedBy"] as? String {
            directedByLabel.text = "Directed by \(directedBy)"  
        } else {
            directedByLabel.text = "N/A"
        }

        // Show the banner if the object was created within the last 7 days
        if let createdAt = filmObject.createdAt {
            let calendar = NSCalendar.currentCalendar()
            let sevenDaysAgo = calendar.dateByAddingUnit(.Day, value: -7, toDate: NSDate(), options: [])

            // Show banner if sevenDaysAgo <= createdAt
            if sevenDaysAgo!.compare(createdAt) != .OrderedDescending {
                // Show the banner imageView
                bannerView.hidden = false
            } else {
                bannerView.hidden = true
            }
        } else {
            bannerView.hidden = true
        }

        // ... bind the rest of the data from the PFObject to the cell

    }

}