Question

我试图将包含嵌套对象数组的数据对象从“主”视图传递到“详细信息”视图。目前，我能够显示数据对象的父级，但是我正努力尝试找出如何将嵌套的数据数组传递到详细信息页面。以下是我的数据模型的示例，以及如何显示当前信息。我不确定我需要在NavigationLink元素中传递信息的地方键入什么代码。我确信可能有更好的方法来执行此操作，但是，我只是一名设计师，出于原型制作原因而试图弄清这一点。

// Passports.swift //

import Foundation
import SwiftUI

struct Passports: Identifiable {
    let id : Int
    let passportPremium: Bool
    let passportActive: Bool
    let passportTitle: String
    let passportDates: String
    let venues: [Venue]
    }

struct Venue: Identifiable {

    let id = UUID()
    let title : String
    let venueArea: String
    let venueItems: [venueItem]
}

struct venueItem {
    let title: String
    let productDescription: String
    let productPrice: Double
    let productType: String
    let newStatus: Bool
    let diningPlan: Bool
    let kidFriendly: Bool
    let vegetarian: Bool
    let glutenFree: Bool
    let featuredProduct: Bool
    let containsAlcohol: Bool
}


extension Passports {
    static func all() -> [Passports] {
        return [
            Passports (
                id: 1001,
                passportPremium: false,
                passportActive: true,
                passportTitle : "Passport Title Example",
                passportDates: "October 20 - November 3, 2019",
                venues: [
                    Venue (
                        title: "Venue Name",
                        venueArea: "Germany",
                        venueItems: [
                                venueItem (
                                title: "Potato Dumpling",
                                productDescription: "Potato Dumpling with Mushroom Sauce",
                                productPrice: 0.00,
                                productType: "Food",
                                newStatus: false,
                                mealPlan: false,
                                kidApproved: true,
                                vegetarian: false,
                                glutenFree: false,
                                featuredProduct: false,
                                containsAlcohol: false
                            ),
                            venueItem (
                                title: "Pork Schnitzel",
                                productDescription: "Pork Schnitzel with Mushroom Sauce and Spaetzle",
                                productPrice: 0.00,
                                productType: "Food",
                                newStatus: false,
                                mealPlan: false,
                                kidApproved: false,
                                vegetarian: false,
                                glutenFree: false,
                                featuredProduct: false,
                                containsAlcohol: false
                            )
])
]
            )

        ]

    }

}

// PassportsView //

import SwiftUI

struct PassportsView: View {

   var model = Passports.all()

    var body: some View {
        NavigationView {
            ForEach(self.model) { item in
                NavigationLink (destination: PassportDetails(passportTitle: item.passportTitle, venues: [Venue()]  ) ) {
                    GeometryReader { geometry in
                        HStack {
                                VStack(alignment: .leading) {
                                    Text(item.passportTitle)
                                        .fontWeight(.semibold)
                                        .foregroundColor(Color.white)
                                        .multilineTextAlignment(.leading)
                                    Text(item.passportDates)
                                        .foregroundColor(Color.white)
                                }.frame(width: geometry.size.width, height: 120)
                                .background(Color("Purple"))

                            .cornerRadius(6)
                        }
                    }
                }.padding(.horizontal)
            }
        }
    }
}

// PassportDetails //

struct PassportDetails: View {
var passportTitle = "Passport Name"
var venues: [Venue] = [
    Venue(title: "Test Venue", venueArea: "Test Area", venueItems: [venueItem]())
]

var venueProd: [venueItem] = [
    venueItem(title: "Test item", productDescription: "Test Description", productPrice: 9.99, productType: "Food", newStatus: false, mealPlan: true, kidApproved: false, vegetarian: false, glutenFree: false, featuredProduct: false, containsAlcohol: false)
]

var body: some View {

    NavigationView {
        List {
            HStack {
                Text("Test")
                Spacer()
                Text("9.99")
            }
        }
    }.navigationBarTitle(Text(passportTitle))
}
}

Answer 1

在PassportDetails中执行以下操作：

var venues: [Venue]

并在Passports中执行以下操作：

NavigationLink (destination: PassportDetails(passportTitle: item.passportTitle, venues: item.venues) )

PS：您应该对passportTitle进行相同的操作，这意味着在PassportDetails中放置var passportTitle: String

SwiftUI-将嵌套的对象数组传递到详细信息视图

1 个答案: