space_cadet is a simple hack, for any ActiveRecord supported database, which provides a uuids table of distributable identities of space cadets -- ActiveRecord::Base instances which use the SpaceCadetWrapper. Each space cadet has by reference a space_id unique in the set of all local space cadets...

Helpers to use UUID with uuidtools

FFI Wrapper for libuuid with extra helpers for common UUID tasks like getting an array of uuids for quicker distribution

UUIDParameter handles a :uuid column and validation for any model.

Implementation of UUID v7

URL-friendly, Base32-encoded UUIDs for Rails models

Generate UUID(rfc4122) version 3(based on md5) or version 5(based on sha-1).

Helps using uuid everywhere in routes instead of id for ActiveRecord models.

Convert UUIDs to compact Base58 or Base62 representations (22 chars vs 36). Guaranteed roundtrip encoding, URL-safe output, and built-in UUID generation.

Override migration methods to support UUID/ULID columns without having to be explicit about it.

Converts BSON::ObjectId to and from UUIDv1's.

Generate and find by UUIDs in ActiveRecord models

Adds association_uuids= method on has_many and has_and_belongs_to_many associations

A simple gem to auto generate UUIDs for the id field of models.

This extends shoulda-matchers to allow validating binary uuids in models.

UUIDv47 implementation in Ruby

A UUIDv4 support library

nice and easy, user-facing uuids

Allows ActiveRecord to use (native) UUIDs, even as primary keys. Currently only works with PostgreSQL.

extend to base58 readable short uuid-style ids