【 #SwiftData 】ModelContainer の View へのセット 👉 https://android.benigumo.com/20240122/modelcontainer/

BackyardBirdsDataContainer.swift

import SwiftUI
import SwiftData

public extension View {
  func backyardBirdsDataContainer(inMemory: Bool = true) -> some View {
    modifier(DataContainerViewModifier(inMemory: inMemory))
  }
}

struct DataContainerViewModifier: ViewModifier {
  private let container: ModelContainer

  init(inMemory: Bool) {
    container = try! ModelContainer(
      for: DataGeneration.schema,
      configurations: [ModelConfiguration(isStoredInMemoryOnly: inMemory)]
    )
  }

  func body(content: Content) -> some View {
    content
      .onAppear {
        DataGeneration.generateAllData(modelContext: container.mainContext)
      }
      .modelContainer(container)
  }
}