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name: swiftdata description: SwiftData skills — class inheritance patterns for hierarchical models, type-based querying, polymorphic relationships, and inheritance-vs-enum decisions. Use when designing SwiftData model hierarchies. allowed-tools: [Read, Glob, Grep] last_verified: 2026-07-16 review_by: 2027-06-22

SwiftData Skills

SwiftData modeling patterns beyond the basics.

When This Skill Activates

Use this skill when the user:

• Designs hierarchical SwiftData models (class inheritance)
• Needs type-based or polymorphic queries
• Weighs inheritance vs enum for model variants

Available Skills

Paths are relative to THIS file's directory — skills run with cwd set to the user's project, so resolve each path from this SKILL.md's own location.

Skill	Read	Covers
inheritance	inheritance/SKILL.md	Class inheritance, polymorphic relationships, type-based querying, inheritance-vs-enum

How to Route

1. Read inheritance/SKILL.md (relative to this file) plus any reference files it lists.
2. Apply the guidance to the user's code. For broader macOS SwiftData architecture, see also ../macos/swiftdata-architecture/SKILL.md.