cypriss/mutations

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1396 stars · 92 forks observed · 2026-08-28

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

A Ruby gem for composing business logic into command objects that sanitize, coerce, and validate input before executing. It provides a structured alternative to ActiveRecord validations and controller callbacks for Rails and plain Ruby apps.

Use cases

• validate and sanitize user signup input in a rails controller
• replace strong parameters and model validations with command objects
• organize business operations like signup, login, and password change into reusable commands
• build multi-model create flows without nested attributes
• reuse the same business logic across web controllers and background jobs

When to choose

• you want input validation and business logic separated from controllers and models
• you're building a rails or ruby app with complex multi-model operations
• you need commands reusable across API endpoints, jobs, and other contexts

When to avoid

• you prefer service objects or dry-rb's dry-validation ecosystem
• your app has simple CRUD operations with minimal validation needs
• you're not working in Ruby or Rails

Facets

library · maturity stable

form-handling middleware web-development backend developer-tools ruby command-pattern business-logic input-sanitization rails form-validation

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