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jperezdelreal
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swiftdata

Persist, query, and manage SwiftData models in iOS 26+ apps.

Updated Apr 6, 2026
Search Tags:#migration#swift#persistence#swiftui#swiftdata#cloudkit#model-definition
One-click install
npx skills add https://github.com/jperezdelreal/GymBro --skill swiftdata-jperezdelreal
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swiftdata
Source: https://github.com/jperezdelreal/GymBro/tree/main/.squad/skills/ios/swiftdata
Command: npx skills add https://github.com/jperezdelreal/GymBro --skill swiftdata-jperezdelreal

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Persist, query, and manage structured data in iOS 26+ apps using SwiftData.

Core Features & Use Cases

  • Model Definition: Define @Model classes with @Attribute, @Relationship, and @Transient to model your domain.
  • ModelContainer Setup & CRUD: Configure ModelContainer, perform create/read/update/delete operations, and handle migrations.
  • SwiftUI & Concurrency: Integrate with SwiftUI via @ModelActor and manage concurrency safely.
  • Migration & Cloud Sync: Plan and execute schema migrations and CloudKit sync with ModelConfiguration.
  • Use Case: Build apps that require robust local data persistence, offline support, and data modeling without Core Data.

Quick Start

Define your SwiftData models and setup a container, then insert and fetch data via the modelContext.

Frequently Asked Questions about swiftdata

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

FAQPage Schema
How do I persist structured data in SwiftUI without Core Data?▼

You can persist structured data in SwiftUI by defining @Model classes and configuring a ModelContainer to handle CRUD operations locally, replacing the need for Core Data.

How do I define data models in SwiftData?▼

SwiftData models are defined by creating classes annotated with @Model, utilizing @Attribute, @Relationship, @Transient, and @Unique to accurately map your domain properties.

Does SwiftData support CloudKit synchronization and versioned migrations?▼

Yes, SwiftData supports CloudKit synchronization and versioned schema migrations by configuring ModelConfiguration to manage updates and sync structured data across devices.

How do I query data using FetchDescriptor in a SwiftData app?▼

You query data in SwiftData by configuring FetchDescriptor objects and executing them via the modelContext to retrieve and filter your persisted structured records.

Can I manage concurrency safely when accessing SwiftData models?▼

Yes, you can manage concurrency safely in SwiftData by utilizing @ModelActor to integrate data access with SwiftUI while ensuring thread-safe model operations.

What is the best way to handle schema migrations in iOS 26+ apps?▼

The best way to handle schema migrations in iOS 26+ apps is using SwiftData's versioned migrations with ModelConfiguration to update data models without losing persisted records.

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