# insert(_:) Registers the specified model with the context so it can include the model in the next save operation. ``` func insert(_ model: T) where T : PersistentModel ``` ## Parameters `model` The model to include in the next save operation. ## Discussion A model is given a temporary persistent identifier until the first time a context saves it, after which that context assigns a permanent identifier. If you call [`rollback()`](/documentation/SwiftData/ModelContext/rollback()) after inserting a model but before the next save operation, the context discards that model. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)