I'm getting this error when clicking on the search bar:
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Can't use in/contains operator with collection Assignment_4.SearchResult(studentID: "1060", lastName: "Squarepants", firstName: "Spongebob", major: "Krusty Krab Chef", year: "Junior", gpa: "4.0") (not a collection)'
Getting the error on this line.
let array = (results as NSArray).filtered(using: searchPredicate) This is the whole code. I can't figure out what's wrong. Thanks!!
var results = [SearchResult]() var indexN = 0 var addStudent = false var searchController: UISearchController! var filteredTableData = [String]() var resultSearchController = UISearchController() @IBAction func AddStudentButton(_ sender: Any) { addStudent=true performSegue(withIdentifier: "detailSegue", sender: self) } @IBAction func refreshButton(_ sender: Any) { refreshTable() } override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. listTableView.delegate = self listTableView.dataSource = self listTableView.reloadData() jsonParser() self.resultSearchController = ({ let controller = UISearchController(searchResultsController: nil) controller.searchResultsUpdater = self controller.dimsBackgroundDuringPresentation = true controller.searchBar.sizeToFit() self.listTableView.tableHeaderView = controller.searchBar return controller })() self.listTableView.reloadData() } /* func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return 1 } */ func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { if (self.resultSearchController.isActive) { return self.filteredTableData.count } else { return self.results.count } // return self.results.count } func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { let cell:UITableViewCell = UITableViewCell(style:UITableViewCellStyle.subtitle, reuseIdentifier: "cell") //cell.textLabel!.text = self.results[indexPath.row].firstName + " " + results[indexPath.row].lastName //return cell // let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) if (self.resultSearchController.isActive) { cell.textLabel?.text = filteredTableData[indexPath.row] return cell } else { cell.textLabel?.text = self.results[indexPath.row].firstName + " " + results[indexPath.row].lastName return cell } } func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { indexN = indexPath.row addStudent=false performSegue(withIdentifier: "detailSegue", sender: self) } func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool { return true } func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { if (editingStyle == UITableViewCellEditingStyle.delete) { // handle delete (by removing the data from your array and updating the tableview) Delete(studentID: self.results[indexN].studentID) refreshTable() } } func numberOfSections(in tableView: UITableView) -> Int { return 1 } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } func jsonParser() { let urlPath = "http://csmadison.dhcp.bsu.edu/~vjtanksale/cs320/selectstudents.php" guard let endpoint = URL(string: urlPath) else { print("Error creating endpoint") return } let request = URLRequest(url: endpoint) URLSession.shared.dataTask(with: request) { (data, response, error) in do { guard let data = data else { return } guard let json = try JSONSerialization.jsonObject(with: data, options: []) as? [[String:AnyObject]] else { print("No idea") return } for result in json { if let student = SearchResult(json: result) { self.results.append(student) } } self.grabData() } catch let error as NSError { print(error.debugDescription) } }.resume() } func grabData() { DispatchQueue.main.async { self.listTableView.reloadData() } } override func prepare(for segue: UIStoryboardSegue, sender: Any?) { if(addStudent==false){ let newVC: DetailViewController = segue.destination as! DetailViewController newVC.result = results[indexN] newVC._label1 = results[indexN].studentID newVC._label2 = results[indexN].lastName newVC._label3 = results[indexN].firstName newVC._label4 = results[indexN].major newVC._label5 = results[indexN].year newVC._label6 = results[indexN].gpa } else if(addStudent==true){ let newVC: DetailViewController = segue.destination as! DetailViewController newVC.addStudent=true } } func Delete(studentID: String) { let request = NSMutableURLRequest(url: NSURL(string: "http://csmadison.dhcp.bsu.edu/~vjtanksale/cs320/deletestudents.php")! as URL) request.httpMethod = "POST" let postString = "StudentId="+studentID request.httpBody = postString.data(using: String.Encoding.utf8) let task = URLSession.shared.dataTask(with: request as URLRequest) { data, response, error in if error != nil { print("error=\(error)") return } print("response = \(response)") let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue) print("responseString = \(responseString)") } task.resume() } func refreshTable(){ results.removeAll() self.listTableView.reloadData() jsonParser() self.listTableView.reloadData() } func updateSearchResults(for searchController: UISearchController) { filteredTableData.removeAll(keepingCapacity: false) let searchPredicate = NSPredicate(format: "SELF CONTAINS[c] %@", searchController.searchBar.text!) let array = (results as NSArray).filtered(using: searchPredicate) filteredTableData = array as! [String] self.listTableView.reloadData() } }