How do I use swiftdata

To use SwiftData in your app, you can follow these steps:

1. Import the Framework: Start by importing the SwiftData framework into your project.

2. Define Your Models: Use the @Model macro to define your data models. This macro simplifies the process of defining your schema. For example:

   import SwiftData
   
   @Model
   class Trip {
       var destination: String
       var date: Date
       // Add other properties as needed
   }
   

3. Configure the Model Container: Use the modelContainer modifier on your WindowGroup to tell the view hierarchy about your model. This allows your views to fetch and display data from the model container.

   @main
   struct MyApp: App {
       var body: some Scene {
           WindowGroup {
               ContentView()
                   .modelContainer(for: Trip.self)
           }
       }
   }
   

4. Query Data: Use SwiftData's query capabilities to fetch data from the model container. For example, you can fetch all Trip models like this:

   struct ContentView: View {
       @Query var trips: [Trip]
   
       var body: some View {
           List(trips) { trip in
               Text(trip.destination)
           }
       }
   }
   

5. Custom Data Stores: If you need to use a custom backend for your data, you can configure a custom data store. This allows you to use SwiftData's API with different storage backends like SQLite, a remote web service, or JSON files. For more details, you can refer to the session Create a custom data store with SwiftData.

6. Track Changes: SwiftData also provides a history API to track changes in your data store, which is useful for features like syncing with a remote server. For more information, you can watch the session Track model changes with SwiftData history.

For a detailed walkthrough and examples, you can refer to the session What’s new in SwiftData.

Relevant Sessions

1. What’s new in SwiftData
2. Create a custom data store with SwiftData
3. Track model changes with SwiftData history