A small collection of extensions useful for data coercion and validation

A variety of functional transforms and value object coercions for Transproc.

Rbdantic provides BaseModel-like data classes with field validation, type coercion, custom validators, JSON Schema generation, and serialization. Inspired by Python's Pydantic.

Emu acts as a replacement for ad-hoc type coercions and strong_parameters.

Provides simple, convention-based, user input validation and coercion. Also provides a 'type safe hash' and command line option parser that use it.

Coerce blank strings into nil objects for ActiveRecord

dry-types attribute coercion integration for well_formed

Form-object base class for Rails: typed props with always-on coercion, blank-to-nil, nested forms, multi-model attribute mapping, and ActiveModel validations. Built on the Literal gem.

Cattri provides a clean DSL for defining class-level and instance-level attributes with optional defaults, coercion, accessors, and inheritance support.

Define your resources with a clean DSL, and RestEasy handles naming conventions, type coercion, serialisation, authentication, and HTTP plumbing — so you can ship an API gem with minimal boilerplate.

Ukiryu is a platform-adaptive command execution framework that transforms CLI tools into declarative APIs. It provides the "OpenAPI" for command-line interfaces, enabling cross-platform tool integration with type safety and structured results. Key features: * Declarative YAML profiles define to...

A composable type system for Ruby with runtime validation and coercion.