How to update the data from the searchResultsController (UISearchController) - ios

Question

So I am using a searchResultsController, which takes an array of Strings, and shows them in a tableview (It's an autocomplete list). When the user presses the 'Search' button on the keyboard, and the entered String is not yet in my Tableview, I want to add it, and update the tableview accordingly.
The issue is that once I added a String to the array, and make a new search, the array isn't updated with the new value!
Here is my code:
In my ViewDidLoad() on the Overview.swift class
class Overview: UIViewController,UISearchControllerDelegate,UISearchBarDelegate,UICollectionViewDelegate,UICollectionViewDataSource {
var mySearchController : UISearchController!
var mySearchBar : UISearchBar!
override func viewDidLoad() {
super.viewDidLoad()
let src = SearchResultsController(data: convertObjectsToArray())
// instantiate a search controller and keep it alive
mySearchController = UISearchController(searchResultsController: src)
mySearchController.searchResultsUpdater = src
mySearchBar = mySearchController.searchBar
//set delegates
mySearchBar.delegate = self
mySearchController.delegate = self
}
This is the data function, used for the UISearchController
func convertObjectsToArray() -> [String] {
//open realm and map al the objects
let realm = try! Realm()
let getAutoCompleteItems = realm.objects(AutoComplete).map({$0})
...
return convertArrayStrings // returns [String] with all words
}
So when the user pressed the search button on the keyboard, I save that word to my database.
Now I need to put the updated version of convertObjectsToArray() in my searchResultsController, but I haven't found out how to do this. All help is welcome
And last, but not least, my SearchResultsController class, which is used in the viewDidLoad of my Overview.swift class.
class SearchResultsController : UITableViewController {
var originalData : [String]
var filteredData = [String]()
init(data:[String]) {
self.originalData = data
super.init(nibName: nil, bundle: nil)
}
required init(coder: NSCoder) {
fatalError("NSCoding not supported")
}
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "Cell")
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.filteredData.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath)
cell.textLabel!.text = self.filteredData[indexPath.row]
return cell
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
clickedInfo = filteredData[indexPath.row]
}
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
}
For the filtering of my words in the tableview (when user types something, only matching Strings are shown), I use the following extension.
extension SearchResultsController : UISearchResultsUpdating {
func updateSearchResultsForSearchController(searchController: UISearchController) {
let sb = searchController.searchBar
let target = sb.text!
self.filteredData = self.originalData.filter {
s in
let options = NSStringCompareOptions.CaseInsensitiveSearch
let found = s.rangeOfString(target, options: options)
return (found != nil)
}
self.tableView.reloadData()
}

Answer 1

You can use the search controller's update function for that I think:
func updateSearchResultsForSearchController(searchController: UISearchController) {
convertObjectsToArray()
self.tableView.reloadData()
}