CODEWITHSUNDEEP
iosswiftparse-platform
LuKenneth
LuKenneth

Reputation: 2237

Parse backend: key won't increment?

I'm trying to increment a number in my parse table under the column "votes". Here's my code:

func upVote() {
    var reviewQuery: PFQuery = PFQuery(className: "reviews")
    reviewQuery.whereKey("content", equalTo: reviewTextView.text)
    reviewQuery.findObjectsInBackgroundWithBlock{
        (objects:[AnyObject]!, error:NSError!)->Void in

        if error == nil{

            for object in objects{
                println(object)
                let review:PFObject = object as! PFObject
                review.incrementKey("votes", byAmount: 1)
            }
        }
    }

}

When I print the object in the console I can see that it is the correct object that I'm looking for. It looks like this:

<reviews:ZqgSVL1Tsd:(null)> {
content = "njk\n";
reviewer = "<PFUser:6387CJtYI1>";
votes = 1;}

But when I look at my parse end, the number of votes has not changed. What am I doing wrong?

Upvotes: 0

Views: 400

Answers (2)

davecom
davecom

Reputation: 1498

After you modify an object, however small the modification, you must save it after. You are not saving your changes to the object review.

You have several options for saving, including save(), saveInBackground(), saveEventually(), and more. See the documentation for PFObject for more information: https://www.parse.com/docs/ios/api/Classes/PFObject.html#//api/name/save

For example, you could save the object synchronously with review.save() and you could save the object asynchronously with review.saveInBackground().

Upvotes: 1

rshev
rshev

Reputation: 4176

Save the object with

review.saveInBackground()

after incrementing the key.

Upvotes: 2

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