TwoFactorAuth makes it easy to set up two-factor authentication for your users, whether through Devise or your custom Rails or Ruby authentication.

A type cast for ActiveModel

TypedAttrs integrates Sorbet's T::Struct with ActiveRecord's JSON/JSONB columns, providing type-safe structured data storage with runtime and static type checking. Supports nested structs, arrays, hashes, union types, and automatic validation.

Tyrion's goal is to provide a fast (as in _easy to setup_) and dirty unstructured document store.

Social Publishing Rubygem

A simple UC student number code validation gem

uc_student_number validation for ActiveModel

Rails Validations for typically UK specific data

Ultracache reduces computational costs occur from dynamic attributes by caching them into Redis

A validator for ActiveModels that checks that attributes have not been modified since the last time the model was saved.

Generates file contents for UnionBank's eCrediting enrollment and transaction files.

Union Station Rails hooks.

Add to your models an easily way to generate uniq numbers

Check uniqueness across models

A simple validator to verify the uniqueness of certain item attributes from a collection

This gem is useful when you work with `paranoia` + `devise` gems etc, to prevent duplication creation (or unique index errors)

This validator allows you to verify nested models created with nested forms to validate the uniqueness of an attribute, More details in http://github.com/evedovelli/unique_nested_validator

Unite provides extensions to your objects to support values with units

Unity provides extensions to your objects to support values with units

A Rails adaptor that encapsulate measurements and their units in Ruby on Rails.