Andrew Bancroft • 6/15/2023

Pre-populate a SwiftData Persistent Store

This article explains how to pre-populate a SwiftData persistent store in iOS/macOS apps using Swift. It covers three key building blocks: initializing a ModelContainer (with options for permanent or in-memory storage), creating instances of @Model classes manually or from files like JSON/CSV, and inserting those instances into the container's mainContext. The guide includes code examples for seeding data for first-time users, unit tests, and Xcode previews, with considerations for in-memory vs persistent storage.

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#Swift #Swiftdata #Modelcontainer