Making object from any hash or hash array

Simulate multi-table inheritance for activerecord models using a polymorphic association

Cursor-based pagination for ActiveRecord.

Recursively traverse trees using a single SQL query

ActiveRecord Stand-alone migrations

Awesome patches backported for ActiveRecord MySQL adapters

MySQL index hint support for ActiveRecord

N+1 count query killer for ActiveRecord

Rescue from MySQL and Sqlite duplicate errors

Rails ActiveRecord connector for Google Spanner Database

ActiveReporting implements ROLAP (Relational Online Analytical Processing) concepts such as fact models, dimensions, and metrics on top of ActiveRecord, providing a DSL for describing reports and analytics on your data.

Directed Acyclic Graph hierarchy for Rail's ActiveRecord, supporting Rails 4.x

Oauth and OpenID made dead simple, added custom token settings for Facebook

Adds the missing outer_joins method to ActiveRecord

Extension for ActiveRecord that adds support for PostgreSQL array columns, mapping string values to integers.

Restrict the values assignable to ActiveRecord attributes or associations

Oauth and OpenID made dead simple

Automatically increments an ActiveRecord column

Brainstem allows you to create rich API presenters that know how to filter, sort, and include associations.

Gems main responsibility is to provide service for copying Carrierwave files between records