rom-rb/rom

Health v2 · maintenance only

Adoption not part of the score

2108 stars · 170 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

ROM (Ruby Object Mapper) is a data mapping and persistence toolkit for Ruby that provides powerful object mapping without limiting the underlying database's capabilities. It organizes persistence into composable layers - relations, repositories, changesets, and commands - keeping domain logic separate from persistence details.

Use cases

• map database rows to plain ruby objects
• separate persistence from domain logic in ruby apps
• write composable sql queries without activerecord
• use a data mapper pattern orm alternative in ruby
• manage database changesets and commands
• work with sql and nosql datastores through one toolkit

When to choose

• you want explicit separation between domain objects and persistence
• you need full access to your database's query power instead of orm abstractions
• you're building a ddd-style ruby application with layered architecture
• you prefer plain structs over heavyweight model objects

When to avoid

• you want a batteries-included activerecord-style experience with minimal setup
• your team is small and a conventional orm is simpler
• you need rapid prototyping without learning a layered data-mapping architecture

Facets

library · maturity active

orm database database-driver serialization databases web-development backend developer-tools ruby cross-platform data-mapping persistence ddd repository-pattern sql nosql data-access-layer changesets

Member repositories

For agents

markdown · JSON · MCP: product_card(name="rom-rb/rom")