Configure and Open a Realm - SwiftUI

The Swift SDK provides property wrappers to open a realm in a SwiftUI-friendly way.

You can:

• Implicitly open a realm with a defaultConfiguration or specify a different configuration.

Open a Realm with a Configuration

When you use @ObservedRealmObject or @ObservedResults, these property wrappers implicitly open a realm and retrieve the specified objects or results.

// Implicitly use the default realm's objects(Dog.self)
@ObservedResults(Dog.self) var dogs

Note: The @ObservedResults property wrapper is intended for use in a SwiftUI View. If you want to observe results in a view model, register a change listener.

When you do not specify a configuration, these property wrappers use the defaultConfiguration. You can set the defaultConfiguration globally, and property wrappers across the app can use that configuration when they implicitly open a realm.

You can provide alternative configurations that the property wrappers use to implicitly open the realm. To do this, create explicit configurations. Then, use environment injection to pass the respective configurations to the views that need them. Passing a configuration to a view where property wrappers open a realm uses the passed configuration instead of the defaultConfiguration.