显示来自 CoreData SwiftUI 的今天输入数据的唯一列表

Question

有人可以解决在这种情况下仅显示今天输入数据的代码吗？我将代码的详细信息放在下面(阅读注释以获取指南(，也许问题出在获取请求以及我想要显示数据的每个内部滚动视图上。如果需要任何详细信息，请告诉我

提取请求

@FetchRequest(
entity: ExpenseLog.entity(),
sortDescriptors: [
NSSortDescriptor(keyPath: ExpenseLog.date, ascending: false)
]
,predicate: NSPredicate(value: Calendar.current.isDateInToday(Date()))
) //here i dont know what to put to show the today inputted data
private var result: FetchedResults<ExpenseLog>

对于每个

if self.result.count == 0
{
DaftarTransaksiEmpty()
}
else
{
VStack
{
// i want to put list of the only today inputted data here
ForEach(self.result)
{
(log: ExpenseLog) in

ZStack{
HStack(spacing: 16) {
CategoryImageView(category: log.categoryEnum)
VStack(alignment: .leading, spacing: 8) {
Text(log.nameText).font(.headline)
Text(log.dateText).font(.subheadline)
}
Spacer()
Text(log.amountText).font(.headline)
} .padding(.vertical, 8) .padding(.horizontal,4)
}
}
}.background(Rectangle().foregroundColor(Color.init(#colorLiteral(red: 1, green: 1, blue: 1, alpha: 1))).edgesIgnoringSafeArea(.all))
}

主页视图(( (完整代码(

@Environment(.managedObjectContext) var moc

@FetchRequest(entity: Profile.entity(), sortDescriptors: [NSSortDescriptor(keyPath: Profile.namaUser, ascending: true),
NSSortDescriptor(keyPath: Profile.limitHarian, ascending: true),
NSSortDescriptor(keyPath: Profile.photo, ascending: true)
]
) var profiles : FetchedResults<Profile>
@State var photoUser : Data = .init(count: 0)

@Environment(.managedObjectContext)
var context: NSManagedObjectContext

@FetchRequest(
entity: ExpenseLog.entity(),
sortDescriptors: [
NSSortDescriptor(keyPath: ExpenseLog.date, ascending: false)
]
,predicate: NSPredicate(value: Calendar.current.isDateInToday(Date()))
) //here i dont know what to put to show the today inputted data
private var result: FetchedResults<ExpenseLog>

let hour = Calendar.current.component(.hour, from: Date()) 
@State var pengeluaranhariini = "250.000"

enum HomeSheet{
case Profile
case Add
}
@State var isSheet : Bool = false
@State var homeSheet : HomeSheet = .Profile


var body: some View {

GeometryReader { geometry in
VStack
{
HStack{
ZStack
{
Image("kotakcardgreeting") .resizable()
.frame(width: geometry.frame(in: .global).width, height: geometry.frame(in: .global).height/4)
.offset(y: -50)
HStack{

VStack(alignment: .leading){

Text("(getGreeting()),")
.font(.system(size: 22))
.fontWeight(.semibold).foregroundColor(Color.init(#colorLiteral(red: 1, green: 0.888686657, blue: 0.7034975886, alpha: 1))) .padding(.top, 40)
ForEach(self.profiles, id: .self)
                      { profilNama in
Text("(profilNama.namaUser ?? "")")
.font(.system(size: 22))
.fontWeight(.semibold).foregroundColor(Color.init(#colorLiteral(red: 1, green: 0.888686657, blue: 0.7034975886, alpha: 1))) .padding(.top, 1)
}

Text("Jangan lupa catat pengeluaranmu hari ini")
.font(.system(size: 17)).fontWeight(.semibold).foregroundColor(.white)
.padding(.top, 10)

}.padding()


Spacer()
ForEach(self.profiles, id: .self)
{ profilPhoto in
VStack{
Image(uiImage: UIImage(data: profilPhoto.photo ?? self.photoUser)!).resizable().frame(width: 55, height: 55).scaledToFit().overlay(Circle().stroke(Color.init(#colorLiteral(red: 1, green: 0.888686657, blue: 0.7034975886, alpha: 1)), lineWidth: 5)).clipShape(Ellipse()).shadow(color: Color.init(#colorLiteral(red: 1, green: 0.888686657, blue: 0.7034975886, alpha: 1)), radius: 5).onTapGesture {
}.padding()

}
}
}.offset(y: -60)

Image("bigaddbutton") .resizable()
.aspectRatio(contentMode: .fit)
.frame(width: geometry.frame(in: .global).width/4, height: geometry.frame(in: .global).height/8) .onTapGesture {
self.isSheet = true
self.homeSheet = HomeSheet.Add
}
.padding(.top, 100)
}
}
Spacer()

HStack {
ZStack {
Image("cardstatus") .resizable()
.aspectRatio(contentMode: .fit)
.frame(width: geometry.frame(in: .global).width, height: geometry.frame(in: .global).height/4)
HStack
{
Spacer()
if self.result.count == 0
{
Text(" ")
}
else
{
Text("Rp (self.pengeluaranhariini),00.")
 .font(.system(size: 20))
 .fontWeight(.bold).foregroundColor(.white) .multilineTextAlignment(.trailing) .padding(.top, 40)
}

Spacer()
if self.profiles.count == 0
{
Text(" ")
}
else
{
ForEach(self.profiles, id: .self)
{ profilLimit in
Text(("Rp (profilLimit.limitHarian ?? ""),00."))
.font(.system(size: 20)).fontWeight(.bold) .foregroundColor(.white) .multilineTextAlignment(.trailing)
.padding(.top, 40)
}
}
Spacer()
}
}
}

Spacer()
HStack
{
Text("Daftar Pengeluaran Hari Ini")
.font(.system(size: 17)).fontWeight(.bold).foregroundColor(Color.init(#colorLiteral(red: 0, green: 0, blue: 0, alpha: 1))) .multilineTextAlignment(.leading)
Spacer()
Button(action: {
self.isSheet = true
self.homeSheet = HomeSheet.Add
}) {
Text("Tambah")
.font(.system(size: 17)).fontWeight(.bold).foregroundColor(Color.init(#colorLiteral(red: 0.1489486992, green: 0.390168488, blue: 0.555157125, alpha: 1))) .multilineTextAlignment(.leading)
}
}.padding(.horizontal)
ScrollView
{
if self.result.count == 0
{
DaftarTransaksiEmpty()
}
else
{
VStack
{
// i want to put list of the only today inputted data here
ForEach(self.result)
{
(log: ExpenseLog) in

ZStack{
HStack(spacing: 16) {
CategoryImageView(category: log.categoryEnum)
VStack(alignment: .leading, spacing: 8) {
Text(log.nameText).font(.headline)
Text(log.dateText).font(.subheadline)
}
Spacer()
Text(log.amountText).font(.headline)
} .padding(.vertical, 8) .padding(.horizontal,4)
}
}
}.background(Rectangle().foregroundColor(Color.init(#colorLiteral(red: 1, green: 1, blue: 1, alpha: 1))).edgesIgnoringSafeArea(.all))
}




}

}.background(Rectangle().foregroundColor(Color.init(#colorLiteral(red: 0.8039215803, green: 0.8039215803, blue: 0.8039215803, alpha: 1))).edgesIgnoringSafeArea(.all))
.sheet(isPresented: self.$isSheet) {
if self.homeSheet == HomeSheet.Profile{
ProfileFilled().environment(.managedObjectContext, self.moc)
}
else if self.homeSheet == HomeSheet.Add{
LogFormView(context: self.context)
}
}

}
}

这是我的费用日志数据模型

费用日志实体

Answer 1

这个工作正常。我将谓词格式化为"date <= %@ 和日期>= %@"，这只给了我今天的事件。

struct Today: View {
@Environment(.managedObjectContext) private var viewContext
@FetchRequest var reminder: FetchedResults<CDReminder>
init(){
var calendar = Calendar.current
calendar.timeZone = NSTimeZone.local
let dateFrom = calendar.startOfDay(for: Date()) // eg. 2016-10-10 00:00:00
let dateTo = calendar.date(byAdding: .day, value: 1, to: dateFrom)
let predicate = NSPredicate(format : "date <= %@ AND  date >= %@", dateTo! as CVarArg, dateFrom as CVarArg)
self._reminder = FetchRequest(
entity: CDReminder.entity(),
sortDescriptors: [NSSortDescriptor(keyPath: CDReminder.date, ascending: false)],
predicate: predicate)
}

Answer 2

您可以在抓取请求中使用谓词来过滤日期。 像这样，

@FetchRequest(entity: Profile.entity(), sortDescriptors: [NSSortDescriptor(keyPath: Profile.namaUser, ascending: true),
NSSortDescriptor(keyPath: Profile.limitHarian, ascending: true),
NSSortDescriptor(keyPath: Profile.photo, ascending: true)
], predicate: NSPredicate(format: "date == %@", Date())) var profiles : FetchedResults<Profile>