Update Custom UITableViewCell UILabel after asynchronous Parse query - ios

Question

Can't think of a good name for the question...if you can think of a better one, please feel free to edit it :)
I am building an iOS app using Swift and Parse.com.
In my app, I have a main PFQueryTableViewController which loads some data from my Parse cloud into some custom UITableViewCells.
One of the values that I want for a label on the cells takes a while for Parse to return and so I am getting it using findObjectsInBackgroundWithBlock().
In my cellForRowAtIndexPath when I'm loading my table, I have the following code:
// Set cells for each row of table
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath, object: PFObject?) -> PFTableViewCell? {
var cell: CustomTableViewCell = tableView.dequeueReusableCellWithIdentifier("MyCell", forIndexPath: indexPath) as! CustomTableViewCell
// Get Course Object objectID to hand to getCourseGrade function
var anObjectID: String = object!.objectId!
cell.setCell(name: object!["objectName"] as! String, code: object!["objectCode"] as! String, grade: getObjectGrade(anObjectID))
return cell
}
In the code above, I am calling a function called getObjectGrade to pass a value across to my setCell() function which sets up the customTableViewCells as it builds the UITableView which runs as below (simplified):
func getObjectGrade(objectIdString: String) -> Float {
// Set a starting value of objectGrade
var objectGrade: Float = -1
//...I set up a PFQuery
query?.findObjectsInBackgroundWithBlock({ (objects: [AnyObject]?, error: NSError?) -> Void in
//...here I am retrive the value I need from Parse --> valueFromParse
objectGrade = valueFromParse
})
return objectGrade
}
NOW, I am VERY AWARE that this will NOT work...obviously the code does not wait for my findObjectsInBackgroundWithBlock() code to run and so returns the objectGrade before it has been updated.
MY QUESTION: How could I set the value of the label of my cell once the findObjectsInBackgroundWithBlock() code section DOES complete?

Answer 1

SOLVED! I moved the "getObjectGrade" function to my CustomTableViewCell file and called it from there. :) If anyone has this issue and needs help, just comment and i'll try :)