Search bar tableview array index out of range - ios

Question

I'm trying to create a search bar in my Tableview, but it's not giving me a result of filtration, Table is empty
fatal error: Array index out of range
I thing that something goes wrong in Tableview update fuction or filterContent, but can't understand what. Could somebody explain it to me?
var find: [List] = [] //my core data file
var searchResult: [List] = [] //my core data file
let context: NSManagedObjectContext = (UIApplication.sharedApplication().delegate as! AppDelegate).managedObjectContext
var detailViewController: MainVC? = nil
var frc : NSFetchedResultsController = NSFetchedResultsController()
var searchController: UISearchController!
func getFetchResultsController() ->NSFetchedResultsController {
frc = NSFetchedResultsController(fetchRequest: listFetchRequest(), managedObjectContext: context, sectionNameKeyPath: nil, cacheName: nil)
return frc
}
func listFetchRequest() -> NSFetchRequest{
let fetchRequest = NSFetchRequest (entityName: "List")
let sortDescriptor = NSSortDescriptor(key: "item", ascending: true)
fetchRequest.sortDescriptors = [sortDescriptor]
return fetchRequest
}
override func viewDidLoad() {
super.viewDidLoad()
frc = getFetchResultsController()
frc.delegate = self
do {
try frc.performFetch()
} catch {}
if let split = self.splitViewController {
let controllers = split.viewControllers
self.detailViewController = (controllers[controllers.count-1] as! UINavigationController).topViewController as? MainVC
}
searchController = UISearchController(searchResultsController: nil)
tableView.tableHeaderView = searchController.searchBar
searchController.searchResultsUpdater = self
searchController.dimsBackgroundDuringPresentation = false
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func controllerDidChangeContent(controller: NSFetchedResultsController) {
tableView.reloadData()
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
let numberOfSections = frc.sections?.count
return numberOfSections!
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if searchController.active {
return searchResult.count
} else {
//return find.count
let numberOfRowsInSection = frc.sections?[section].numberOfObjects
return numberOfRowsInSection!
}
// #warning Incomplete implementation, return the number of rows
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)
let search = (searchController.active) ? searchResult[indexPath.row] : frc.objectAtIndexPath(indexPath) as! List
print(search)
//Configure the cell..
cell.textLabel!.text = search.item
let qty = search.qty
let address = search.address
cell.detailTextLabel?.text = "Dukan Sayi: \(qty)\(address)"
return cell
}
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
if searchController.active {
return false
} else {
return true
}
}
override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
let managedObject : NSManagedObject = frc.objectAtIndexPath(indexPath) as! NSManagedObject
context.deleteObject(managedObject)
do {
try context.save()
} catch {}
}
func updateSearchResultsForSearchController(searchController: UISearchController) {
if let searchText = searchController.searchBar.text {
filterContent(searchText)
print(searchText)
tableView.reloadData()
}
}
func filterContent(searchText: String) {
searchResult = find!.filter({ ( a: List) -> Bool in
let nameMatch = a.item.rangeOfString(searchText, options: NSStringCompareOptions.CaseInsensitiveSearch)
return nameMatch != nil
})
}