Appending strings into an array in Parse

Question

I just learned how to store an array into a Parse Cloud using the example provided by the Parse Documentation:

gameScore.addUniqueObjectsFromArray(["flying", "kungfu"], forKey:"skills")
gameScore.saveInBackground()

Now, utilizing this logic, I want to append strings into the array. So this is what I wrote:

@IBAction func requestButtonPressed(sender: AnyObject) {
    var prayerRequests = PFObject(className: "PrayerRequests")
    prayerRequests.addObject(["YOIDJFO"], forKey:"skills")
    prayerRequests.saveInBackground()
}

Now, after having executed the function requestButtonPressed three times, in parse this is happening:

However. I don't want that to happen when I execute the function requestButtonPressed three times. I want it to be something like this:

Anybody have a solution to this problem?

Santhosh · Accepted Answer · 2015-09-10 06:24:09Z

2

Every time you use this statement var prayerRequests = PFObject(className: "PrayerRequests") a new PFObject will be created. In order to update a object you need to query the object first and then update its field. In your case you should first get the array by querying for the object, modify / append data to the array and then update the object.

answered Sep 10, 2015 at 6:24

Santhosh

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1 Comment

Jae Kim Over a year ago

That was one solution that I was thinking of but then wouldn't that mean I would have to create a new object every time I want to modify the array? That would mean I would have many unnecessary objects? Maybe?

Vikas Mishra · Accepted Answer · 2015-09-10 06:13:26Z

0

Instead of doing addObject, do insertObject:{yourObject} atIndexPath:{storingPosition} forKey:{@"youKey"}.

And the the value you are adding is an array ["YOIDJFO"] , object should be like {"YOIDJFO"}

answered Sep 10, 2015 at 6:13

Vikas Mishra

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1 Comment

Jae Kim Over a year ago

Thank you so much for the response. Could you please translate the syntax into swift code? I tried it and I'm getting some syntax errors...

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