ForEach可以在陣列中集成陣列嗎？

我正在構建一個應用程式，顯示公司內不同部門的公司“x”工資率。我遇到的問題是能夠創建一個 ForEach 來遍歷所有工資率陣列資料。目前，當您單擊“開發”、“培訓”或“營銷”時，顯示的工資率是針對“開發”的。“培訓”和“營銷”的較高工資率不會顯示。我的模型資料被組織成陣列（[rates]）的陣列（[Dept]）。我找不到任何解釋如何在陣列中迭代陣列的檔案或教程。

這是我的 PayRateDetailView：

struct RateDetailView: View {
var dept: Dept

var body: some View {
        List {
            ForEach(dept.rates) { line in
                RateCardView(dept: dept)
            }
        }
        .navigationTitle(dept.deptName)
}
}

這是我的 RateCardView：

struct RateCardView: View {
var dept: Dept

var body: some View {
    ForEach(dept.rates) { rate in
        HStack {
            Text("Year \(rate.year)")
            Spacer()
            Text("$ \(rate.shiftWorkerRate, specifier: "%.2f")")
            Spacer()
            Text("$ \(rate.managerRate, specifier: "%.2f")")
        }
    }
}
}

這是我的 PayRateView：

struct PayRateView: View {
var depts: [Dept]
var dept: Dept

var body: some View {
    List {
        ForEach(depts, id: \.deptName) { name in
            NavigationLink(destination:
                            RateCardView(dept: dept)) {
                Label(name.deptName, systemImage: "person")
            }
        }
    }
}
}

我認為我的問題的答案可能是找到一種更好的方法來顯示我的工資率模型資料，但這是最適合我試圖顯示的結構：

struct Dept: Identifiable {
let id: UUID
var deptName: String
var rates: [HourlyRates]

init(id: UUID = UUID(), deptName: String, rates: [HourlyRates]) {
    self.id = id
    self.deptName = deptName
    self.rates = rates
}
}
extension Dept {
static let deptList: [Dept] = [
    Dept(deptName: "Development", rates: [
        HourlyRates(year: 1, shiftWorkerRate: 10, managerRate: 20),
        HourlyRates(year: 2, shiftWorkerRate: 11, managerRate: 21),
        HourlyRates(year: 3, shiftWorkerRate: 12, managerRate: 22),
        HourlyRates(year: 4, shiftWorkerRate: 13, managerRate: 23),
        HourlyRates(year: 5, shiftWorkerRate: 14, managerRate: 24),
        HourlyRates(year: 6, shiftWorkerRate: 15, managerRate: 25),
        HourlyRates(year: 7, shiftWorkerRate: 16, managerRate: 26)]),
    Dept(deptName: "Training", rates: [
        HourlyRates(year: 1, shiftWorkerRate: 12, managerRate: 22),
        HourlyRates(year: 2, shiftWorkerRate: 13, managerRate: 23),
        HourlyRates(year: 3, shiftWorkerRate: 14, managerRate: 24),
        HourlyRates(year: 4, shiftWorkerRate: 15, managerRate: 25),
        HourlyRates(year: 5, shiftWorkerRate: 16, managerRate: 26),
        HourlyRates(year: 6, shiftWorkerRate: 17, managerRate: 27),
        HourlyRates(year: 7, shiftWorkerRate: 18, managerRate: 28)]),
    Dept(deptName: "Marketing", rates: [
        HourlyRates(year: 1, shiftWorkerRate: 12, managerRate: 22),
        HourlyRates(year: 2, shiftWorkerRate: 13, managerRate: 23),
        HourlyRates(year: 3, shiftWorkerRate: 14, managerRate: 24),
        HourlyRates(year: 4, shiftWorkerRate: 15, managerRate: 25),
        HourlyRates(year: 5, shiftWorkerRate: 16, managerRate: 26),
        HourlyRates(year: 6, shiftWorkerRate: 17, managerRate: 27),
        HourlyRates(year: 7, shiftWorkerRate: 18, managerRate: 28)])
]
}

struct HourlyRates: Identifiable {
let id: UUID
var year: Int
var shiftWorkerRate: Double
var managerRate: Double

init(id: UUID = UUID(), year: Int, shiftWorkerRate: Double, managerRate: Double) {
    self.id = id
    self.year = year
    self.shiftWorkerRate = shiftWorkerRate
    self.managerRate = managerRate
}
}

uj5u.com熱心網友回復：

一切對我來說都很好，沒有使用RateDetailView你呼叫的PayRateDetailView，以及PayRateView.

這是我的測驗代碼，顯示“開發”、“培訓”和“營銷”的工資率按預期顯示。

struct ContentView: View {
    var body: some View {
        NavigationStack {  // <-- here
            PayRateView()
        }
    }
}

struct RateCardView: View {
    var dept: Dept
    
    var body: some View {
        ForEach(dept.rates) { rate in
            HStack {
                Text("Year \(rate.year)")
                Spacer()
                Text("$ \(rate.shiftWorkerRate, specifier: "%.2f")")
                Spacer()
                Text("$ \(rate.managerRate, specifier: "%.2f")")
            }
        }
    }
}

struct PayRateView: View {
    var depts: [Dept] = Dept.deptList
    var dept: Dept = Dept(deptName: "", rates: [])
    
    var body: some View {
        List {
            ForEach(depts, id: \.deptName) { dept in  // <-- here
                NavigationLink(destination: RateCardView(dept: dept)) {
                    Label(dept.deptName, systemImage: "person")  // <-- here
                }
            }
        }
    }
}

struct Dept: Identifiable {
    let id: UUID
    var deptName: String
    var rates: [HourlyRates]
    
    init(id: UUID = UUID(), deptName: String, rates: [HourlyRates]) {
        self.id = id
        self.deptName = deptName
        self.rates = rates
    }
}

extension Dept {
    
    // here for testing
    static let deptList: [Dept] = [
        Dept(deptName: "Development", rates: [
            HourlyRates(year: 1, shiftWorkerRate: 0, managerRate: 20),
            HourlyRates(year: 2, shiftWorkerRate: 0, managerRate: 21),
            HourlyRates(year: 3, shiftWorkerRate: 0, managerRate: 22),
            HourlyRates(year: 4, shiftWorkerRate: 0, managerRate: 23),
            HourlyRates(year: 5, shiftWorkerRate: 0, managerRate: 24),
            HourlyRates(year: 6, shiftWorkerRate: 0, managerRate: 25),
            HourlyRates(year: 7, shiftWorkerRate: 0, managerRate: 26)]),
        Dept(deptName: "Training", rates: [
            HourlyRates(year: 1, shiftWorkerRate: 1, managerRate: 22),
            HourlyRates(year: 2, shiftWorkerRate: 1, managerRate: 23),
            HourlyRates(year: 3, shiftWorkerRate: 1, managerRate: 24),
            HourlyRates(year: 4, shiftWorkerRate: 1, managerRate: 25),
            HourlyRates(year: 5, shiftWorkerRate: 1, managerRate: 26),
            HourlyRates(year: 6, shiftWorkerRate: 1, managerRate: 27),
            HourlyRates(year: 7, shiftWorkerRate: 1, managerRate: 28)]),
        Dept(deptName: "Marketing", rates: [
            HourlyRates(year: 1, shiftWorkerRate: 2, managerRate: 22),
            HourlyRates(year: 2, shiftWorkerRate: 2, managerRate: 23),
            HourlyRates(year: 3, shiftWorkerRate: 2, managerRate: 24),
            HourlyRates(year: 4, shiftWorkerRate: 2, managerRate: 25),
            HourlyRates(year: 5, shiftWorkerRate: 2, managerRate: 26),
            HourlyRates(year: 6, shiftWorkerRate: 2, managerRate: 27),
            HourlyRates(year: 7, shiftWorkerRate: 2, managerRate: 28)])
    ]
}

struct HourlyRates: Identifiable {
    let id: UUID
    var year: Int
    var shiftWorkerRate: Double
    var managerRate: Double
    
    init(id: UUID = UUID(), year: Int, shiftWorkerRate: Double, managerRate: Double) {
        self.id = id
        self.year = year
        self.shiftWorkerRate = shiftWorkerRate
        self.managerRate = managerRate
    }
}

標籤：数组循环迅捷前锋

上一篇：Python中的串列和回圈

下一篇：迭代時的Python嵌套字典問題