How to delete an object from Parse?

Question

I would like to delete an object from Parse when I un-check the table row.

The issue occurs when trying to delete objects from Parse after having queried them.

this is my code:

   if  cell.accessoryType == UITableViewCellAccessoryType.Checkmark {
            cell.accessoryType = UITableViewCellAccessoryType.None

            var query = PFQuery(className:"Followers")
            query.whereKey("follower", equalTo: "\(PFUser.currentUser()?.username)")
            query.whereKey("following", equalTo: "\(cell.textLabel?.text)")

            query.findObjectsInBackgroundWithBlock {
                (objects: [AnyObject]?, error: NSError?) -> Void in
                if error == nil {

                    for object in objects as! [PFUser] {

                        object.deleteInBackground()
                    }

                } else {
                    println(error)
                }
            }


        }

Can you use Xcode to place a breakpoint to see if deleteInBackground is getting called? — keji
– keji, Commented Aug 17, 2015 at 15:54
Can you check that objects.count != 0? Or can you atleast see what is getting called? — keji
– keji, Commented Aug 17, 2015 at 15:58

William GP · Accepted Answer · 2018-02-19 05:24:22Z

4

I think the issue is in your query.findObjectsInBackgroundWithBlock i think its because you are defining objects as! [PFUser] instead of a [PFObject]

try this it should do the trick

query.findObjectsInBackground { (objects, error) in
        if error == nil,
            let objects = objects {
            for object in objects {
                object.deleteInBackground()
            }
        }

edited Feb 19, 2018 at 5:24

William GP

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answered Oct 13, 2015 at 23:33

OverD

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Comments

Community · Accepted Answer · 2017-05-23 12:26:21Z

0

I want to delete objects from parse

Yes in the Parse iOS SDK to delete multiple objects in background at once on Parse server, you can use deleteAllInBackground

You can use it with 2 different ways:

PFObject.deleteAll(inBackground: [PFObject]?)
PFObject.deleteAll(inBackground: [PFObject]?, block: PFBooleanResultBlock?)

For example:

query.findObjectsInBackgroundWithBlock({ (objects : [PFObject]?, error: NSError?) -> Void in
    PFObject.deleteAll(inBackground: objects)
})

You can also see this post

I hope my answer was helpful 😊

edited May 23, 2017 at 12:26

CommunityBot

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answered May 12, 2017 at 15:41

Julien Kode

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