# init(from:configurations:transaction:content:) Loads and displays a modifiable model using the provided `ConfigurationCatalog` and configuration choices in phases. ``` nonisolated init(from catalog: Entity.ConfigurationCatalog, configurations: [String : String]? = nil, transaction: Transaction = Transaction(), @ViewBuilder content: @escaping (Model3DPhase) -> Content) ``` ## Parameters `catalog` A collection of alternative representations for an entity. `configurations` A dictionary of configuration choices the initializer applies as it loads the entity, mapping the ID of a configuration set to the ID of a configuration within that set. `transaction` The transaction to use when the phase changes. `content` A closure that takes the load phase as an input, and returns the view to display for the specified phase. ## Discussion Before the load operation completes, the phase is [`Model3DPhase.empty`](/documentation/RealityKit/Model3DPhase/empty). After the operation completes, the phase becomes either [`Model3DPhase.failure(_:)`](/documentation/RealityKit/Model3DPhase/failure(_:)) or [`Model3DPhase.success(_:)`](/documentation/RealityKit/Model3DPhase/success(_:)). In the first case, the phase’s [`error`](/documentation/RealityKit/Model3DPhase/error) value indicates the reason for failure. In the second case, the phase’s [`model`](/documentation/RealityKit/Model3DPhase/model) property contains the loaded model. Use the phase to drive the output of the `content` closure, which defines the view’s appearance: ```swift Model3D(from: myConfigurationCatalog, configurations: ["vibe": "relaxed"]) { phase in if let model = phase.model { model // Displays the loaded model. } else if phase.error != nil { Color.red // Indicates an error. } else { Color.blue // Acts as a placeholder. } } ``` To add transitions when you change the name, apply an identifier to the [`Model3D`](/documentation/RealityKit/Model3D). --- 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)