var controller: NSFetchedResultsController<TextInputs>!

override func viewDidLoad() {
    super.viewDidLoad()

    controller.delegate = self

func attemptFetch() {

    let fetchRequest: NSFetchRequest<TextInputs> = TextInputs.fetchRequest()

    let controller = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: DataController().managedObjectContext, sectionNameKeyPath: nil, cacheName: nil)

    self.controller = controller

    do {
        try controller.performFetch()
    } catch {
        let error = error as NSError
        print("(error)")
    }
}

@IBAction func savePressed(_ sender: Any) {

    attemptFetch()

    let textInputs = TextInputs(context: DataController().managedObjectContext)

    if let page22Text = TextInputBox.text {
        textInputs.page22 = page22Text

        do {
            try DataController().managedObjectContext.save()
        } catch {
            fatalError("Failure to save context: (error)")
        }