I'm trying to access another class in my CollectionView Controller but when I try and initialise the class I get the error
Here is the class
@MainActor
class AlbumsViewModel {
private let albumService: AlbumService
private let favouritesService: FavouritesService
private let recommendationService: RecommendationService
@Published var favourites = [Bool]()
@Published var recommendedAlbums = [Album]()
@Published var allAlbums = [Album]() {
didSet {
updateFavourites()
}
}
init(albumService: AlbumService, favouritesService: FavouritesService, recommendationService: RecommendationService) {
self.albumService = albumService
self.favouritesService = favouritesService
self.recommendationService = recommendationService
}
...(functions here)
Collectionview Controller Class
class CVC: UICollectionViewController, UICollectionViewDelegateFlowLayout {
var viewModel: AlbumsViewModel
init?(viewModel: AlbumsViewModel, coder: NSCoder) {
self.viewModel = viewModel
super.init(coder: coder)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func viewDidLoad() {
super.viewDidLoad()
collectionView.delaysContentTouches = false
Task {
print(viewModel.allAlbums)
}
} // End viewDidLoad
...
Trying to recreate this https://martinmitrevski.com/2021/07/11/ml-recommendation-app-with-create-ml-on-ios-15/
You are instantiating the CVC directly from your Storyboard.
So you can't pass in the viewModel property.
You will have to think of another way to use viewModel in CVC. For example, as a global singleton, like this...
In AlbumsViewModel:
static let shared = AlbumsViewModel(albumService:favouritesService:recommendationService:) // however you initialise it
...then in CVC, refer to
AlbumsViewModel.shared
...or create a shortcut property
let viewModel = AlbumsViewModel.shared
