SwiftUIで一覧表示画面を作成する

import Foundation

struct FoodModel: Codable {
    var id: Int
    var title: String
    var userName: String
    var imageName: String
    var liked: Bool = false
}

import Combine
import SwiftUI

class FoodDataSource: BindableObject {
    typealias PublisherType = PassthroughSubject
    
    let didChange: FoodDataSource.PublisherType = PassthroughSubject<Void, Never>()
    var foodData: [FoodModel]

    init() {
        foodData = [
            FoodModel(id: 10, title: "スープカレー", userName: "山田二郎", imageName: "1", liked: true),
            FoodModel(id: 20, title: "そば屋のカレー", userName: "川田吾郎", imageName: "2"),
            FoodModel(id: 30, title: "タイ風カレー", userName: "里田舞", imageName: "3", liked: true),
            FoodModel(id: 40, title: "スタミナジャンボカレー", userName: "海田泳七郎", imageName: "4"),
            FoodModel(id: 50, title: "レッドカレー", userName: "岡田八郎", imageName: "5")
        ]

        didChange.send(())
    }
}

import SwiftUI

struct FoodRow : View {
    var foodModel: FoodModel

    var body: some View {
        VStack(alignment: .leading) {
            Image(foodModel.imageName)
                .resizable()
                .aspectRatio(contentMode: ContentMode.fit)
                .shadow(radius: 10)
                .border(Color.white, width: 2)

            Text(foodModel.title).font(.headline)

            HStack {
                Text(foodModel.userName).font(.subheadline)
                Spacer()
                Image(foodModel.liked ? "liked" : "unliked")
            }
        }.padding()
    }
}

#if DEBUG
struct FoodRow_Previews : PreviewProvider {
    static var previews: some View {
        Group {
            FoodRow(foodModel: FoodModel(id: 10, title: "Ramen", userName: "Jiro Yamada", imageName: "5"))
        }.previewLayout(.fixed(width: 300, height: 400))
    }
}
#endif

import SwiftUI

struct FoodList : View {
    @ObjectBinding var foodDataSource = FoodDataSource()

    var body: some View {
        NavigationView {
            List(foodDataSource.foodData.identified(by: \.id)) { foodModel in
                    FoodRow(foodModel: foodModel)
                }
            .navigationBarTitle(Text("Food list"))
        }
    }
}

#if DEBUG
struct FoodList_Previews : PreviewProvider {
    static var previews: some View {
        FoodList()
    }
}
#endif

import SwiftUI

struct ContentView : View {
    var body: some View {
        FoodList()
    }
}

#if DEBUG
struct ContentView_Previews : PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}
#endif