Getting data from Parse as “Optional(test)” and want to do something with that “test” part - swift

Question

I am new to Parse and I am trying to retrieve my first password (my password is: test). But I can only receive it as “Optional(test)”. The “test” there is actually the password that I want to receive but I can’t get it out of the paranthesis. My code is as follows;
import UIKit
import Parse
import Bolts
class ViewController: UIViewController, UITextFieldDelegate {
#IBOutlet weak var userNameTextField: UITextField!
#IBOutlet weak var passwordTextField: UITextField!
#IBOutlet weak var credentialsLabel: UILabel!
#IBAction func checkCredentialsButton(sender: AnyObject) {
var query = PFQuery(className:"userName")
query.getObjectInBackgroundWithId("the id of my object") {
(userNameRetrieved: PFObject?, error: NSError?) -> Void in
if error == nil && userNameRetrieved != nil {
println(userNameRetrieved)
println("Username has been retrieved succesfully")
println(userNameRetrieved?.objectForKey("username"))
} else {
println(error)
}
}
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.userNameTextField.delegate = self
self.passwordTextField.delegate = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func textFieldShouldReturn(userText: UITextField) -> Bool {
userNameTextField.resignFirstResponder()
passwordTextField.resignFirstResponder()
return true
}
}
And my logs are as follows;
Optional(<userName: "my username", objectId: “the id that i am using", localId: (null)> {
ACL = "<PFACL: “my acl">";
username = test;
})
Username has been retrieved succesfully
Optional(test)
Is there a way for me to use that password to log my user in?
Also, is there a way for me to retrieve an array of passwords that are registered to check if the password is true or not?

Answer 1

use if let to unwrap the optional
#IBAction func checkCredentialsButton(sender: AnyObject) {
var query = PFQuery(className:"userName")
query.getObjectInBackgroundWithId("the id of my object") {
(userNameRetrieved: PFObject?, error: NSError?) -> Void in
if error == nil && userNameRetrieved != nil {
if error == nil && userNameRetrieved != nil {
if let userArray = userNameRetrieved {
print(userArray)
if let username = userNameRetrieved?.objectForKey("username") {
print(username)
}
}
} else {
println(error)
}
}
}