We can validate CPF and CNPJ formats and verifying digits.

A clean, immutable Ruby interface for working with piece identifiers in PNN format. PNN provides a consistent and rule-agnostic notation for representing pieces in abstract strategy board games like chess, shogi, and xiangqi. Features include state modifiers for enhanced/diminished/intermediate p...

Simple DSL to validate params (and coerce them to the desired type) that fall outside of Rails' default parameter whitelisting and ActiveModel validations system. The common use cases are searching and sorting, whether from an HTML form or via a JSON API.

A rails form helper and builder for use with Twitter's Bootstrap. It wraps form elements with the DOM necessary to render them correctly using Bootstrap and automatically renders validation errors using Bootstrap.

Core classes for data validation with contracts approach (using Either + Writer monad combination & ADT for composition)

RSpec matches for Nobrainer models, including association and validation matchers.

As your Rails projects evolve and grow, your model validations tend to change as well. An unfortunate side effect of this evolution is that your table- backed ActiveRecord::Base descendants end up with rows that instantiate invalid model instances. ValidData generates a report for your Rails appl...

This gem allows you to pass in a EDIFACT string or file, and returns an array structure, to enable additional processing and validation

Adds a new validation for ActiveRecord, 'has_unpublished_password'

Need a simple, consistent way to create model instances and check validations in your ActiveRecord 3.1+ tests? Use the Modelizer. Just don't trust the docs, since lots changed in 5.x and I got lazy.

Easy validation of deeply-nested hashes

This gem allows to generate JsonSchema thanks to a Builder class or an ActiveRecord serialization class. It can be used in Rails 4, 5 or Ruby standalone projects. The output validation is done agains json-schema.

Provide validations from ActiveRecord schema information.

RubyBHL is a simple but flexible request/response wrapper for the Biodiversity Heritage Libary API. It includes (some) validation for request formatting. It has excellent unit-test coverage.

I18n::Message is an object-oriented abstraction for looking up translations from I18n.translate. This is useful for storing lookup information in contexts such as ActiveModel validation error I18n.

Struct + validation + inheritable + default_value + etc...

Annotator for null validation of gRPC requests using `required`

Provides hash validation with pure text configuration that can be stored in db

Simple Ruby Service is a lightweight framework for creating Services and Service Objects (SOs) in Ruby. The framework makes Services and SOs look and feel like ActiveModels, complete with: 1. validations and robust error handling; 2. workflows and method chaining; and 3. consistent interfaces. Ad...

Automatically adds validations to ActiveRecord models that match your database constraints