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dimitriRemoiville
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swiftdata-persistence

Implement SwiftData persistence patterns with ModelContainer, repositories, migrations, and Query in SwiftUI apps.

1|Updated Apr 24, 2026
Search Tags:#testing#migration#ios#persistence#query#swiftdata#model-container
One-click install
npx skills add https://github.com/dimitriRemoiville/cc-mobile --skill swiftdata-persistence-dimitriremoiville
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swiftdata-persistence
Source: https://github.com/dimitriRemoiville/cc-mobile/tree/main/plugins/cc-mobile-ios/skills/swiftdata-persistence
Command: npx skills add https://github.com/dimitriRemoiville/cc-mobile --skill swiftdata-persistence-dimitriremoiville

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Provide a robust, testable persistence layer for iOS apps by using SwiftData patterns, including model definitions, a central ModelContainer, and migration-ready schemas.

Core Features & Use Cases

  • Model definitions with @Model and @Relationship to model domain data.
  • A single ModelContainer at app launch to coordinate persistence and migrations.
  • Protocol-based repositories and @Query support to decouple UI from persistence and enable testability.

Quick Start

Integrate the SwiftData persistence setup by adopting the provided model declarations, container initialization, and repository abstraction to power data-driven UI.

Frequently Asked Questions about swiftdata-persistence

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I structure a testable SwiftData persistence layer in iOS?▼

Structure a testable SwiftData persistence layer by defining typed models with explicit inverse relationships, centralizing the ModelContainer, and using protocol-based repositories to decouple UI from data. This separation enables reliable unit testing.

What is the best way to handle SwiftData schema migrations?▼

Handle SwiftData schema migrations by applying versioned schemas and configuring a central ModelContainer at app launch. This coordinates persistent storage updates safely without breaking existing application data.

How do I use @Query in SwiftUI with a repository abstraction?▼

Use @Query in SwiftUI to fetch data directly into views while routing mutations through protocol-based repositories. This maintains a clean separation between UI rendering and data persistence operations.

When do I need explicit inverse relationships in SwiftData models?▼

Define explicit inverse relationships in SwiftData models when establishing typed domain data connections. Using @Relationship ensures referential integrity and prevents data inconsistencies across your persistent storage.

Does SwiftData work well for separating data layers in iOS apps?▼

SwiftData works well for separating data layers by combining @Model definitions with protocol-based repositories. This isolates persistence logic, ensuring UI components interact only with abstract data interfaces.

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