🔸data model

terms ⟩ data model

To share the same data between multiple views, you need a single source of truth that is separate from the views. This is the data model, and you can share it with any views that need access to the data.

• Your user interface may display data from the data model, and may interact with it to modify the data.

• A common way to construct a data model for a SwiftUI app is to use an observable object. an observable object is an object (reference type) that multiple views can observe.

👥 相關

• @StateObject

• ObservableObject

• view state

import SwiftUI

// ⭐️ 1. define an observable object
class CreatureZoo : ObservableObject {
    // ⭐️ 2. publish its properties
    @Published var creatures = [
        Creature(name: "Gorilla", emoji: "🦍"),
        Creature(name: "Peacock", emoji: "🦚"),
    ]
}

struct Creature : Identifiable { ... }