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comparison Simoleon/Helpers/FavoriteButton.swift @ 131:501ea028ea5e

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Refactor code
author Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
date Mon, 16 Aug 2021 18:22:38 +0100
parents b0bce2c8e4a9
children 081f0857af51
comparison
equal deleted inserted replaced
130:69ce1e7d77b5 131:501ea028ea5e
9 9
10 struct FavoriteButton: View { 10 struct FavoriteButton: View {
11 var currencyPair: String 11 var currencyPair: String
12 12
13 @Environment(\.managedObjectContext) private var viewContext 13 @Environment(\.managedObjectContext) private var viewContext
14 @FetchRequest(sortDescriptors: []) private var favorite: FetchedResults<Favorite> 14 @FetchRequest(sortDescriptors: []) private var favorites: FetchedResults<Favorite>
15 15
16 @State private var starSymbol = "star" 16 @State private var starSymbol = "star"
17 17
18 var body: some View { 18 var body: some View {
19 let favoriteCurrencyPairs = favorite.map { $0.currencyPair } 19 let favoriteCurrencyPairs = favorites.map { $0.currencyPair }
20 Button(action: { favoriteAction(favoriteCurrencyPairs) }) { 20 Button(action: { favoriteAction(favoriteCurrencyPairs) }) {
21 RoundedRectangle(cornerRadius: 15) 21 RoundedRectangle(cornerRadius: 15)
22 .foregroundColor(Color(.secondarySystemBackground)) 22 .foregroundColor(Color(.secondarySystemBackground))
23 .frame(width: 60, height: 60) 23 .frame(width: 60, height: 60)
24 .overlay( 24 .overlay(
63 * Get first favorite core data object that matches the specified currency pair 63 * Get first favorite core data object that matches the specified currency pair
64 * Delete it 64 * Delete it
65 */ 65 */
66 private func removeFromFavorites() { 66 private func removeFromFavorites() {
67 withAnimation { 67 withAnimation {
68 let favoriteObject = favorite.first(where: { $0.currencyPair == currencyPair }) 68 let favoriteObject = favorites.first(where: { $0.currencyPair == currencyPair })
69 viewContext.delete(favoriteObject ?? Favorite()) 69 viewContext.delete(favoriteObject ?? Favorite())
70 70
71 do { 71 do {
72 try viewContext.save() 72 try viewContext.save()
73 } catch { 73 } catch {