It's an extraction of the Spree Ecommerce Preferences. All the credits goes to the Spree authors.

A better API for ActiveRecord eager loading

Adds a preload_pluck method to ActiveRecord that allows querying using Rails 4 preload-style eager loading, and return a 2-dimensional array without ActiveRecord model creation overhead.

ActiveRecord custom preloading

Prepd assists builders of web application products to start with the end in mind by making it easy to stand up all required infrastructure *before* starting to code the application

Tool for testing implementation independent AR components (like plugins)

APN on Rails is a Ruby on Rails gem that allows you to easily add Apple Push Notification (iPhone) support to your Rails application. This version includes an association between an assumed User model and APN::Device

Generate Stripe-like ids for your ActiveRecord models

Prevents a record being destroyed that has associated records through a has many association

An example of embedding ActiveRecord (and migrations) in a cli app

Price history with easy.

A generalized Rails-like preloader

With Prim it's easy to add a primary member to any one-to-many or many-to-many association. Just add a short configuration to a model, generate and run a migration, and you're all set.

Adds a method that allows you to update the model column used for sorting.

This gem allows to define a custom order in which callbacks are called

Private person is an active record extension gem that allows a model to be given privacy settings over arbitrary models and polymorphic relations, putting users' accounts in control of their own privacy policies.

Row Estimation for Active Record - PostgreSQL only.

Proactive Support module.

A way to manage functions, triggers and stored procedures with ActiveRecord

Store your metrics generated with the 'process_metrics' gem using ActiveRecord