Coredata entities : Type (with attribute: "nom") who own many Sujet (with attribute: "nom") (one-to-many relationship)
This works for me :
List of Sujets, sectioned by Types
struct SujetsSectionedListByType: View {
// MARK: - Properties
@SectionedFetchRequest(
sectionIdentifier: \Sujet.type?.nom,
sortDescriptors: [
SortDescriptor(\Sujet.type?.nom, order: .forward),
SortDescriptor(\Sujet.nom, order: .forward)
])
private var sujets: SectionedFetchResults<String?, Sujet>
@Binding var selectedSujet: Sujet?
// MARK: - Body
var body: some View {
List(selection: $selectedSujet) {
ForEach(sujets) { section in
Section(header: Text(section.id ?? "")) {
ForEach(section) { sujet in
NavigationLink(destination: SujetDetail(sujet: sujet, selectedSujet: $selectedSujet), tag: sujet, selection: $selectedSujet) {
SujetListItem(sujet: sujet)
}
}
}
}
}
.frame(minWidth: ListsMinWidth)
}
}
uocram
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
User for
From
Orléans
Post
Replies
Boosts
Views
Activity
A workaround to get the whole managedObject, not only one of her string attributes :
@SectionedFetchRequest(
sectionIdentifier: \Sujet.type?.objectID,
sortDescriptors: [
SortDescriptor(\Sujet.type?.nom, order: .forward),
SortDescriptor(\Sujet.nom, order: .forward)
])
var sujets: SectionedFetchResults<NSManagedObjectID?, Sujet>
and
List(selection: $selectedSujet) {
ForEach(sujets) { section in
Section(header: HStack {
let type = context.object(with: section.id!) as! Type
Label(title: { Text(type.wrappedNom) },
icon: { type.wrappedIcon
.resizable()
.scaledToFit()
.frame(width: 16, height: 16)
})
}) {
ForEach(section) { sujet in
NavigationLink(destination: SujetDetail(sujet: sujet, selectedSujet: $selectedSujet), tag: sujet, selection: $selectedSujet) {
SujetListItem(sujet: sujet)
}
}
}
}
}
I can't find possible to get the managedObject from 'section.id', which is a '_NSCoreDataTaggedObjectID', if sectionIdentifier is passed a 'Type?'
Try
struct FocusedDeckKey : FocusedValueKey {
typealias Value = Binding<DeckViewModel?>
}
extension FocusedValues {
var currentDeck: Binding<DeckViewModel?>? {
get { self[FocusedDeckKey.self] }
set { self[FocusedDeckKey.self] = newValue }
}
}
and
struct AppCommands: Commands {
@FocusedBinding(\.currentDeck) private var currentDeck
}
Try this:
Table(selection: $selectedAction, sortOrder: $sortOrder) {
TableColumn("Ref", value: \.reference) { action in
Text(action.reference ?? "NO REF")
}
TableColumn("Date", value: \.dateCommences) { action in
Text(action.dateCommences?.formatted(date: .abbreviated, time: .omitted) ?? "NO DATE")
}
} rows: {
ForEach(eventActions) { action in
TableRow(action)
}
}
}
If you add this? :
extension FocusedValues {
// MARK: - Actions
var filterAction: (() -> Void)? {
get { self[FilterActionKey.self] }
set { self[FilterActionKey.self] = newValue }
}
private struct FilterActionKey: FocusedValueKey {
typealias Value = () -> Void
}
}
MacOS 12 - Xcode 13 beta 5
1- Given a list of Sujet (Core Data managed objects for example, retrieved with @FetchRequest), in the list view :
@State private var selectedSujet: Sujet?
var body: some View {
List(selection: $selectedSujet) {
ForEach(sujets) { sujet in
NavigationLink(destination: SujetDetail(sujet: sujet)) {
SujetListItem(sujet: sujet)
}
}
}
// focused values (Object, action, Set of selection, String, Bool, ...)
// Passes the selected object in focusedSceneValue
.focusedSceneValue(\.selectedSujet, $selectedSujet)
// Passes the action to the "focus system", executed in this closure when command active in menu
.focusedSceneValue(\.deleteSujetAction) {
if let sujet = selectedSujet {
print("delete: \(sujet.name)")
}
}
}
2- Create an extension for FocusedValues for declarations
extension FocusedValues {
// Binding of optional selected object
var selectedSujet: Binding<Sujet?>? {
get { self[SelectedSujetKey.self] }
set { self[SelectedSujetKey.self] = newValue}
}
// Action declaration
var deleteSujetAction: (() -> Void)? {
get { self[DeleteSujetActionKey.self] }
set { self[DeleteSujetActionKey.self] = newValue }
}
private struct SelectedSujetKey: FocusedValueKey {
typealias Value = Binding<Sujet?>
}
private struct DeleteSujetActionKey: FocusedValueKey {
typealias Value = () -> Void
}
}
3- In MenuCommands :
struct SujetsMenuCommands: Commands {
// Retrieve the focused values
@FocusedValue(\.selectedSujet) var selectedSujet
@FocusedValue(\.deleteSujetAction) var deleteSujetAction
var body: some Commands {
CommandMenu("Sujets") {
Button { deleteSujetAction?() } label: {
Text("Delete \(selectedSujetName)")
}.disabled(selectedSujet?.wrappedValue == nil || deleteSujetAction == nil )
}
}
// private var for comfort
private var selectedSujetName: String {
if let sujet = selectedSujet?.wrappedValue {
return sujet.wrappedName
} else {
return "This Sujet"
}
}
}
If multiple selection:
// 1-
@State private var selectedDonnees = Set<Donnee.ID>()
.focusedSceneValue(\.selectedDonnees, $selectedDonnees)
// 2-
var selectedDonnees: Binding<Set<Donnee.ID>>? {
get { self[FocusedDonneesSelectionKey.self] }
set { self[FocusedDonneesSelectionKey.self] = newValue }
}
private struct FocusedDonneesSelectionKey: FocusedValueKey {
typealias Value = Binding<Set<Donnee.ID>>
}
// 3-
@FocusedBinding(\.selectedDonnees) private var selectedDonnees: Set<Donnee.ID>?
In macOS, in multi-windows app, each with its own scene, MenuCommands act accordingly with only focused scene.
I don't have tested on iPadOS.
MacOS 12 - Xcode 13 beta 5
The same here for :
kUTTypeFileURL
kUTTypeUTF8PlainText
despite import :
import MobileCoreServices
import UniformTypeIdentifiers
the error :
'kUTTypeFileURL' was deprecated in iOS 15.0: Use UTTypeFileURL instead.
'kUTTypeUTF8PlainText' was deprecated in iOS 15.0: Use UTTypeUTF8PlainText instead.
The same here for :
kUTTypeFileURL
kUTTypeUTF8PlainText
despite import :
import MobileCoreServices
import UniformTypeIdentifiers
the error :
'kUTTypeFileURL' was deprecated in iOS 15.0: Use UTTypeFileURL instead.
'kUTTypeUTF8PlainText' was deprecated in iOS 15.0: Use UTTypeUTF8PlainText instead.
Seem to be :
UTType.fileURL.identifier
UTType.utf8PlainText.identifier
compiler happy :)
import UniformTypeIdentifiers
static var draggableType = UTType.data.identifier
Apple doc :
Type Property
data
A base type that represents any sort of byte stream, including files and in-memory data.
Discussion
The identifier for this type is public.data.
This type conforms to UTTypeItem.
Same problem here.
Unable to build standard template in the preview canvas :
`ld: Undefined symbols:
unsafeMutableAddressor of self #1 : Crash.Item in Crash.Item.timestamp.init : Foundation.Date, referenced from:
Crash.Item.timestamp.init : Foundation.Date in Item.o
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Xcode 15 beta 4 Release Notes :
Previewing view code in a SwiftData app results in a linker failure for the canvas despite that code compiling successfully for device and simulator. (111657477) Workaround: Run your app in the simulator to test your UI instead of using Previews.
This works fine for me. All entities in Group Model are deleted (and all subentities, @RelationShip delete rule is set to .cascade) :
private func deleteAll() {
print("delete all!")
do {
if try modelContext.delete(model: Group.self, where: NSPredicate(value: true), includeSubentities: false) {
print("OK Groups cleared !")
// what to triggers UI update, or @Query ?
}
} catch {
print("error: \(error)")
}
}
But, no trigger of UI/Query update…
I had the same experience.
Only on macOS, sidebar not mouse responsive, a little bit with keyboard arrows.
On iOS, TabView behaves as expected
Xcode 16.1 beta 2
MacOS Version 15.1 beta (24B5055e)