So I have a searchBar that works when you type in part of the name of a player or players and filters them but when you delete a character or more in the searchbar it does not show anything, I need help trying to add that as a condition in my func.
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchText == "" {
parseJson()
} else if searchText != "" {
cPlayerArr = cPlayerArr.filter({ (player) -> Bool in return
player.yahooName.lowercased().contains(searchText.lowercased())
})
}
collections.reloadData()
}
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I'm trying to use CoreData to save my favourites so that they will be accessed when the program terminates but I am not sure how to make my object persistent to do that.
@IBAction func addToFav(_ sender: Any) {
let alert = UIAlertController(title: "Favourite Added 💙", message: "\(name.text ?? "") is added to favourites", preferredStyle: .alert)
alert.addAction(UIAlertAction(
title: "OK",
style: UIAlertAction.Style.default)
{ _ in
if let favPlayer = self.item /*this needs to be persistent*/ {
FavouriteManager.shared.add(favPlayer)
PersistenceService.saveContext()
}
})
self.present(alert, animated: true, completion: nil)
print("Favourite button Pressed")
}
I have a PersistenceService class I can more easily access my CoreData values.
class PersistenceService {
private init() {}
static var context: NSManagedObjectContext {
return persistentContainer.viewContext
}
// MARK: CoreData
static var persistentContainer: NSPersistentContainer = {
let container = NSPersistentContainer(name: "playerModel")
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
return container
}()
static func saveContext () {
let context = persistentContainer.viewContext
if context.hasChanges {
do {
try context.save()
} catch {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
let nserror = error as NSError
fatalError("Unresolved error \(nserror), \(nserror.userInfo)")
}
}
}
}
I'm trying to find a way to remove instances with names as empty strings from my array that receives the data. how do I modify my filter to do that.
self.cPlayerArr = fillPlayers.filter(){
$0.yahooName != ""
}
func parseJSON(completed: @escaping () - ()) {
let url = URL(string: "")
let decoder = JSONDecoder()
let appDelegate = UIApplication.shared.delegate as! AppDelegate //- Intentionally using forced casting.
decoder.userInfo[.managedObjectContext] = appDelegate.persistentContainer.viewContext
URLSession.shared.dataTask(with: url!) { (data, response, error) in
if error == nil {
do {
let fillPlayers = try decoder.decode([CurrentPlayers].self, from: data!)
self.cPlayerArr = fillPlayers.filter(){
$0.yahooName != ""
}
let json = try JSONSerialization.jsonObject(with: data!, options: [])
print(json)
DispatchQueue.main.async {
completed()
}
} catch {
print("JSON Error: ", error)
}
}
}.resume()
}
extension CurrentPlayers {
@nonobjc public class func fetchRequest() - NSFetchRequestCurrentPlayers {
return NSFetchRequestCurrentPlayers(entityName: "CurrentPlayers")
}
@NSManaged public var photoUrl: String?
@NSManaged public var firstName: String?
@NSManaged public var lastName: String?
@NSManaged public var position: String?
@NSManaged public var team: String?
@NSManaged public var yahooName: String?
@NSManaged public var status: String?
@NSManaged public var jerseyNumber: Int64
}
extension CurrentPlayers : Identifiable {
}
I'm trying to pass data forward from my HdVC to my FaVC with Notification Center using a button called addToFav and it does not seem to pass my data I call var item. I need a little help figuring it out a way to modify the code so my item can be passed and set to a variable currentFav I have in my FaVC.
HdVC
class HockeyDetailVC: UITableViewController {
let imageController = FetchImage()
var item: CurrentPlayers? /* This object value I want in FaVC */
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self,
selector: #selector(handleFavNotification(notification:)),
name: .passFavNotification,
object: nil)
}
@objc func handleFavNotification(notification:Notification){
if let theFav = notification.object as? CurrentPlayers {
self.item = theFav
}
}
@IBAction func addToFav(_ sender: Any) {
let alert = UIAlertController(title: "Favourite Added 💙", message: "\(name.text ?? "") is added to favourites", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))
self.present(alert, animated: true, completion: nil)
print("Favourite button Pressed")
let passDataVC = FavouritesVC() /* I think passDataVC is supposed to be different because I use storyboard but I don't know what else it's supposed to be. */
self.present(passDataVC, animated: true, completion:nil)
}
FaVC
class FavouritesVC: UITableViewController {
var currentFav: CurrentPlayers? /*this is the variable I want to set my item too. */
var favArr = [CurrentPlayers]()
override func viewDidLoad() {
super.viewDidLoad()
if currentFav == nil {
self.tableView.separatorStyle = UITableViewCell.SeparatorStyle.none
} else {
NotificationCenter.default.post(name: .passFavNotification,
object: self.currentFav)
favArr.append(currentFav!)
print(currentFav!)
}
}
So I am using core data and I have to make my class Decodable to use the decoder for my get request. The errors I get are 'self' used in property access before 'super.init' call in my CoreDataClass each of my decode values has the error.
CoreDataProperties
extension CurrentPlayers {
@nonobjc public class func fetchRequest() - NSFetchRequestCurrentPlayers {
return NSFetchRequestCurrentPlayers(entityName: "CurrentPlayers")
}
@NSManaged public var photoUrl: String?
@NSManaged public var firstName: String?
@NSManaged public var lastName: String?
@NSManaged public var position: String?
@NSManaged public var team: String?
@NSManaged public var yahooName: String?
@NSManaged public var status: String?
@NSManaged public var jerseyNumber: Int64
}
extension CurrentPlayers : Identifiable {
}
CoreDataClass
@objc(CurrentPlayers)
public class CurrentPlayers: NSManagedObject, Decodable {
enum CodingKeys: String, CodingKey {
case photoUrl = "PhotoUrl"
case firstName = "FirstName"
case lastName = "LastName"
case position = "Position"
case team = "Team"
case yahooName = "YahooName"
case status = "Status"
case jerseyNumber = "JerseyNumber"
}
required public init(from decoder: Decoder) throws {
let values = try decoder.container(keyedBy: CodingKeys.self)
photoUrl = try values.decode(String.self, forKey: CodingKeys.photoUrl)
firstName = try values.decode(String.self, forKey: CodingKeys.firstName)
lastName = try values.decode(String.self, forKey: CodingKeys.lastName)
position = try values.decode(String.self, forKey: CodingKeys.position)
team = try values.decode(String.self, forKey: CodingKeys.team)
yahooName = try values.decode(String.self, forKey: CodingKeys.yahooName)
status = try values.decode(String.self, forKey: CodingKeys.status)
jerseyNumber = Int64(try values.decode(Int.self, forKey: CodingKeys.jerseyNumber))
}
}
I'm trying to filter my players using searchBar with scope in a collectionview using a switch statement and my case 0 works but the issue is my other cases I can type into the searchBar but I can't seem to filter (nothing shows up) nor can I delete all the characters when I type.
I have 2 arrays my cPlayerArr is my original array when data is recieved and my allTextArr is my filtered array when any kind of filtering is done.
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
allTextArr = cPlayerArr.filter({ player - Bool in
switch searchBar.selectedScopeButtonIndex {
case 0:
if searchText.isEmpty {
fetchAllPlayers()
} else {
return
player.yahooName!.lowercased().contains(searchText.lowercased())
}
case 1:
if searchText.isEmpty {
fetchForwards()
} else {
print(searchText)
return player.yahooName!.lowercased().contains(searchText.lowercased()) && player.position == "C" &&
player.position == "RW" && player.position == "LW"
}
case 2:
if searchText.isEmpty {
fetchDefense()
} else {
return player.yahooName!.lowercased().contains(searchText.lowercased()) && player.position == "D"
}
case 3:
if searchText.isEmpty {
fetchGoalies()
} else {
return player.yahooName!.lowercased().contains(searchText.lowercased()) && player.position == "G"
}
default:
return false
}
return true
})
collections.reloadData()
}
func searchBar(_ searchBar: UISearchBar, selectedScopeButtonIndexDidChange: Int) {
if (searchBar.selectedScopeButtonIndex == 0) {
cPlayerArr.removeAll()
allTextArr.removeAll()
fetchAllPlayers()
} else if (searchBar.selectedScopeButtonIndex == 1) {
allTextArr.removeAll()
fetchForwards()
} else if (searchBar.selectedScopeButtonIndex == 2) {
allTextArr.removeAll()
fetchDefense()
} else {
allTextArr.removeAll()
fetchGoalies()
}
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) - Int {
if (searchBar.text != "" || searchBar.selectedScopeButtonIndex 0) {
return allTextArr.count
} else {
return cPlayerArr.count
}
}
I have an issue fetching objects from Core Data in my favourites section. I can save it with a button but I can not seem to retrieve the objects when I restart the app. I get it to print over 40000 (I have no idea why) and I see no favourites in my favourites section when I added them before.
override func viewDidLoad() {
super.viewDidLoad()
if currentFav == nil {
//display nil
fetchSave()
self.tableView.separatorStyle = UITableViewCell.SeparatorStyle.none
} else {
NotificationCenter.default.post(name: .passFavNotification,
object: self.currentFav)
DispatchQueue.main.asyncAfter(deadline: .now() + 300) {
self.reviewRating.requestReview(isWrittenReview: false)
}
}
}
//trying to get this function to retrieve my objects in the persistent store
func fetchSave() {
let fetchRequest: NSFetchRequest<CurrentPlayers>
fetchRequest = CurrentPlayers.fetchRequest()
do {
let objects = try context.fetch(fetchRequest)
//I get over 40000 objects
print("These are how many saved favourites I have: \(objects.count)")
tableView.reloadData()
} catch {
print("Fetch failed")
}
}
@IBAction func save(_ sender: UIBarButtonItem) {
let saveFav = CurrentPlayers(context: context)
// Assign values to the entity's properties
for o in prefArr {
saveFav.yahooName = o.yahooName
saveFav.team = o.team
saveFav.position = o.position
saveFav.photoUrl = o.photoUrl
print("These are my saved objects: \(saveFav)")
// To save the new entity to the persistent store, call
// save on the context
}
do {
try context.save()
} catch {
print(error)
}
}
I'm trying to transfer a tableview cell from my hockeydetailVC to my favouritesVC using a button and I can't transfer it due to some issue.
My hockeydetailVC
protocol addThis {
func addFav(data: CurrentPlayers)
}
I'm trying to transfer my item object
var item: CurrentPlayers?	
var delegate: addThis? = nil	
func sendData() {
if delegate != nil {
let data = item!
delegate?.addFav(data: data)
print("This is the data being transferred: \(data)")
}
}
@IBAction func addToFav(_ sender: Any) {
sendData()
print("Favourite button Pressed")
}
My favouritesVC
var currentFav: CurrentPlayers?
func addFav(data: CurrentPlayers) {
currentFav = data
}
I have a segue for my button so I have this
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "r" {
let hockeyDetailVC: HockeyDetailVC = segue.destination as! HockeyDetailVC
hockeyDetailVC.delegate = self
}
}
If the transfer works then my sendData() method up top would print a statement but my addToFav only prints "favourite button pressed".
I am not sure how to transfer data a name from a button in my UITableViewCell to a UIViewController. I have a prepare function but it doesn't work gives me an unrecognized selector error. Is there a way to use it for this instance?
func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "hs" {
let destinationController = segue.destination as! HighlightsVC
destinationController.playerName = (item.yahooName!)
}
}