Guarantee uniqueness of a single attribute across one or more children of an ActiveRecord object Works around https://github.com/rails/rails/issues/4568

ActiveRecord DB Store engine for ActiveSupport::Cache

Wraps ActiveRecord and Logger for use in non-Rails environments

Wraps ActiveRecord and Logger for use in non-Rails environments

ActiveRecord extension for easy STI Delegation

Generic approval queues for record creation, updates and deletion

Adds directed acyclic graph functionality to ActiveRecord.

Extends Rails existing encryption methods and adds simple record encryption.

Generate ActiveRecord models on the fly for your tests

A Rails plugin that will ensure an ActiveRecord object is immutable once saved. Optionally, you can specify attributes to be mutable if the object is in a particular state (block evaluates to true).

This gem will let you inherit any attribute or relation from the parent model.

Acts as kaltura

Rails gem that provides Net Promoter Score (NPS) ratings and analysis for ActiveRecord models. It can be used as a regular 0 to 10 rating scale and you can just ignore the NPS analysis methods.

Rails gem allowing ActiveRecord models to have order and to move them up and down

This act gives an Active Record model the ability to act as a finite state machine (FSM).

Track activities in your ActiveRecord models.

ActiveRecord extension that serializes destroyed records into a trash table from which they can be restored. This is intended to reduce the risk of users misusing your application's delete function and losing data.

A ruby gem to handle multiple user roles on a Rails app, it also has Devise support

Active Record model versioning

Disabling the rendering of the attribute name for errors by the error_messages_for helper. Simply place a caret as the first character in the message.