Facebook Login Swift 2.0 and Parse-Server (latest version)

gistfile1.txt

    // Mark: -Facebook
    
    func loginWithFaceBookInBackground(sender:UIButton) {
        let permissions = ["public_profile", "email"]
            PFFacebookUtils.logInInBackgroundWithReadPermissions(permissions) { (_user:PFUser?, _error:NSError?) in
                if _error == nil {
                    if let possibleUser = _user{
                        print("\(possibleUser.sessionToken) , \(possibleUser)")
                        if possibleUser.isNew {
                            self.accessingFacebookCredentialsToSaveToParse()
                        } else {
                            print("existing user")
                        }
                    }
                } else {
                    print("fb loginPermission .. error \(_error?.localizedDescription)")
                }
            }
        
} // end of function

    func accessingFacebookCredentialsToSaveToParse(){
        let requestPermissions = ["fields":"id,name,email"]
        let graphRequest = FBSDKGraphRequest(graphPath: "me", parameters: requestPermissions)
        graphRequest.startWithCompletionHandler({ (_connection:FBSDKGraphRequestConnection!, results:AnyObject!, err:NSError!) in
            if err == nil {
                let id = results.valueForKey("id") as? String
                let name = results.valueForKey("name") as? String
                let email = results.valueForKey("email") as? String
                
                if let facebookID = id, let username = name , let userEmail = email {
                    print("\(facebookID), \(username), \(userEmail)")
                    let userObject = PFUser.currentUser()
                    userObject?.setObject(userEmail, forKey: "email")
                    userObject?.setObject(facebookID, forKey: "_id")
                    userObject?.setObject(username, forKey: "username")
                    userObject?.saveInBackgroundWithBlock({ (success:Bool, error:NSError?) in
                        if error == nil {
                            print("PFUser was saved")
                             // then display UI 
                        } else {
                            print("was not able to saved the user to parse \(error?.localizedDescription)")
                        }
                    })
                }
                
            } else {
                print("graph request error \(err.localizedDescription)")
            }})
    
} // end