PersonsViewController.swift

// MARK: - Navigation

extension PersonsViewController {
    
    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == "NewPerson" {
            let navigationController = segue.destinationViewController as! UINavigationController
            let controller = navigationController.viewControllers.first as! PersonEditionViewController
            controller.title = "New Person"
            controller.person = Person(name: "", score: 0)
        }
    }
    
    @IBAction func addPerson(sender: AnyObject?) {
        performSegueWithIdentifier("NewPerson", sender: sender)
    }
    
    @IBAction func cancelPersonEdition(segue: UIStoryboardSegue) {
        // Person creation: Cancel button was tapped
    }
    
    @IBAction func commitPersonEdition(segue: UIStoryboardSegue) {
        // Person creation: Done button was tapped
        let controller = segue.sourceViewController as! PersonEditionViewController
        controller.applyChanges()
        
        // Avoid saving when name is empty
        if !controller.person.name.isEmpty {
            try! controller.person.save(dbQueue)
        }
    }
}