iOS swift parse update multiple objects - ios

Question

i have 2 objects(parent , child) with cash and value fields for each object .
at pressing a button , it does some calculations and update objects fields to the new values ,I'm able to update the parent fields to the new values but the child values remain as they are.
heres the full code :
#IBOutlet weak var childImage: UIImageView!
#IBOutlet weak var childInfo: UILabel!
#IBOutlet weak var adoptButton: UIButton!
#IBOutlet weak var nextButton: UIButton!
#IBOutlet weak var malesButton: UIButton!
#IBOutlet weak var femalesButton: UIButton!
#IBOutlet weak var statusLabel: UILabel!
// empty array to load ids from parse
var objectIds = [String]()
// counter is the index number of Ids array
var counter = 0
var childCash = 0
var childValue = 0
var childId: String? = ""
var childName = ""
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
loadingMalesIds()
childInfo.hidden = true
adoptButton.hidden = true
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func maleButtonPressed(sender: AnyObject) {
loadingMalesIds()
}
#IBAction func femaleButtonPressed(sender: AnyObject) {
loadingFemalesIds()
}
#IBAction func nextButtonPressed(sender: AnyObject) {
counter++
if (counter <= objectIds.count){
var query = PFQuery(className:"_User")
query.getObjectInBackgroundWithId(objectIds[(counter - 1) ] ) {
(child: PFObject?, error: NSError?) -> Void in
if error == nil && child != nil {
self.childName = child?["username"] as! String
self.childValue = child?["value"] as! Int
var status = child?["status"] as! String
self.childCash = child?["cash"] as! Int
self.childId = (child?.objectId)!
let userImageFile = child?["userImage"] as! PFFile
userImageFile.getDataInBackgroundWithBlock {
(imageData: NSData?, error: NSError?) -> Void in
if error == nil {
if let imageData = imageData {
let image = UIImage(data:imageData)
self.childImage.layer.borderWidth = 2
self.childImage.layer.masksToBounds = true
self.childImage.layer.borderColor = UIColor.whiteColor().CGColor
self.childImage.image = image
}
}
}
self.statusLabel.text = status
self.childInfo.text = "\(self.childName), $\(self.childValue)"
} else {
println(error)
} // end of if error == nil
}
}else{
counter = 0
} //end of if (counter <= objectIds.count)
childInfo.hidden = false
adoptButton.hidden = false
}//end of method
func loadingMalesIds(){
objectIds.removeAll(keepCapacity: false)
var query = PFQuery(className:"_User")
// get Ids with a condition that users are males
query.whereKey("gender", equalTo:"male")
query.findObjectsInBackgroundWithBlock {
(objects: [AnyObject]?, error: NSError?) -> Void in
if error == nil {
// The find succeeded.
if let objects = objects as? [PFObject] {
for object in objects {
self.objectIds.append((object.objectId)! as String)
}
}
} else {
// Log details of the failure
println("Error: \(error!) \(error!.userInfo!)")
}
}
self.malesButton.enabled = false
self.femalesButton.enabled = true
}
func loadingFemalesIds(){
objectIds.removeAll(keepCapacity: false)
var query = PFQuery(className:"_User")
// get Ids with a condition that users are males
query.whereKey("gender", equalTo:"female")
query.findObjectsInBackgroundWithBlock {
(objects: [AnyObject]?, error: NSError?) -> Void in
if error == nil {
// The find succeeded.
if let objects = objects as? [PFObject] {
for object in objects {
self.objectIds.append((object.objectId)! as String)
}
}
} else {
// Log details of the failure
println("Error: \(error!) \(error!.userInfo!)")
}
}
self.malesButton.enabled = true
self.femalesButton.enabled = false
}
#IBAction func adoptPressed(sender: AnyObject) {
// get parent cash and value
let cash = PFUser.currentUser()!["cash"] as? Int
let value = PFUser.currentUser()!["value"] as? Int
let numberOfChildren = PFUser.currentUser()!["numberOfChildren"] as? Int
//check
if (cash < childValue){
noCashAlert()
}else{
var parentNewCash = cash! - childValue
var parentNewValue = value! + childValue
var childNewCash = childCash + (10 * childValue / 100)
//number of children
var newNumberOfChildren = numberOfChildren! + 1
// save parent new cash and value
var queryParent = PFQuery(className:"_User")
//get parent ID
var currentUserId = PFUser.currentUser()?.objectId!
println("current: \(currentUserId)")
// do the saving operation
queryParent.getObjectInBackgroundWithId(currentUserId!) {
(parent: PFObject?, error: NSError?) -> Void in
if error != nil {
println(error)
} else if let parent = parent {
//parent new cash
parent["cash"] = parentNewCash
//parent new value
parent["value"] = parentNewValue
//parent number of children
parent["numberOfChildren"] = newNumberOfChildren
parent.saveInBackground()
}
}//end parent query
var queryChild = PFQuery(className:"_User")
queryChild.getObjectInBackgroundWithId(self.childId!) {
(child: PFObject?, error: NSError?) -> Void in
if error != nil {
println(error)
} else if let child = child {
child["cash"] = childNewCash
child.saveInBackground()
}
}//end child query
}
}
func noCashAlert(){
let message = "Sorry!, You Don't Have Enough Money,You Can Use Money Printer For Some Extra Cash "
let okText = "Ok"
let alert = UIAlertController(title: nil, message: message, preferredStyle: UIAlertControllerStyle.Alert)
let okayButton = UIAlertAction(title: okText, style: UIAlertActionStyle.Cancel, handler: nil)
alert.addAction(okayButton)
self.presentViewController(alert, animated: true, completion: nil)
}
}

Answer 1

We need more information.
One possibility is that childValue is declared as an Int, and its value is less than 100, so that childValue / 100 is 0. Remember integer division vs. floating-point division. You could say instead Double(childValue) / 100.0 to force floating point.
Have you used a debugger or debugging println()s to determine if childNewCash is what you expect?
Another possibility is that child is declared as a struct not a class, but this is very unlikely given the context.
As a minor style point, you probably want:
if let e = error {
println(e)
}
so that you don't get Optional(...) in your output.
This answer should have gone into comments section but for now I'll keep it and just edit...This is impossible to answer without a lot more context. When you say "it's not updating at all" where and when are you looking?
If you're looking in the getObjectInBackgroundWithId completion handler right after setting the cash value, I'm sure you'd get the right value back.
Are you looking in the cloud database? With a background save there's some delay, and you could be looking too early. If there's conflicting saves, the save tasks could be overwriting one another. How about using the optional completion handler for saveInBackground() to make sure you're not checking too soon?