# trailblazer/trailblazer

The advanced business logic framework for Ruby.

Repository: https://github.com/trailblazer/trailblazer
Canonical: https://ross.abutalabs.com/products/trailblazer
Homepage: http://trailblazer.to
Language: Ruby
License: NOASSERTION
License Family: other
Topics: architecture
Last push: 2025-07-15T09:40:43+00:00

## Health v2 (maintenance only)
Score: 46/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 31, release rhythm 35, longevity 100
- inputs: {"age_days": 4817, "days_push": 414, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3477, forks 147 (observed 2026-08-28T04:08:06.155501+00:00)

## What it is
Trailblazer is a Ruby framework of around 40 gems that structures business logic through abstractions like operations (service objects), form objects, and view components. Its step DSL implements the Railway pattern, handling flow control and error handling so developers focus on what each step does.

## Use cases
- structure business logic in a Ruby on Rails app
- replace ad-hoc service objects with a standard operation pattern
- move validations out of fat models into form objects
- handle success/failure flow control without if-else chains
- organize a growing codebase with clear architectural layers
- make complex business workflows testable and reusable
- parse and validate incoming JSON/XML payloads

## When to choose
- your Rails or Sinatra app has messy controller or model code
- your team uses many inconsistent service object implementations
- you want enforced conventions, testability, and maintainability for complex domain logic
- you need a framework-agnostic architecture layer on top of Rails, Hanami, Roda, or Grape

## When to avoid
- you want a full-stack framework with routing, ORM, or SQL abstractions - Trailblazer deliberately excludes those
- your app is small and simple where MVC conventions suffice
- your team is unwilling to learn a new architectural paradigm and step DSL

## Facets
- artifact type: framework
- maturity: stable
- function: web-framework, middleware, form-handling, serialization, testing, error-handling
- domain: web-development, backend, developer-tools, apis
- platform: ruby, cross-platform
- tags: service-objects, business-logic, railway-pattern, operations, form-objects, rails, architecture, code-organization

## Member repositories
- trailblazer/trailblazer (main) score 46

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:06.155501+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:36:31.194945+00:00, confidence not recorded.
  - readme: https://github.com/trailblazer/trailblazer (fetched 2026-08-28T04:08:06.155501+00:00, sha afee1a4d0f8a)
  - homepage: http://trailblazer.to (fetched 2026-08-29T09:30:35.471944+00:00, sha 904cefa612b1)
  - site_page: https://trailblazer.to/2.1/docs/trailblazer (fetched 2026-08-29T09:30:35.474727+00:00, sha 0d8721ca2266)
  - site_page: https://trailblazer.to/2.1/about (fetched 2026-08-29T09:30:35.476972+00:00, sha 978259f029a8)
  - site_page: https://trailblazer.to/2.1/docs/operation (fetched 2026-08-29T09:30:35.478587+00:00, sha b73ae1d528a4)
  - site_page: https://trailblazer.to/2.1/docs/reform (fetched 2026-08-29T09:30:35.483075+00:00, sha d83e657cd4b7)
- Data as of 2026-08-30T08:39:29.467469+00:00.