Attribute inheritance for AR associations

Specify columns like you would with ActiveRecord migrations and then run .auto_upgrade! Based on the mini_record gem from Davide D'Agostino, it adds fewer aliases, doesn't create timestamps and relationship columns automatically.

Fork of the ActiveRecord JDBC adapter with support for SQL Server and Azure SQL, for more information and help look at the README file in the github repository. AR-JDBC is a database adapter for Rails' ActiveRecord component designed to be used with JRuby built upon Java's JDBC API for database access. Provides (ActiveRecord) built-in adapters: MySQL, PostgreSQL, SQLite3, and SQLServer.

Install this gem to use AS/400 with JRuby on Rails.

Install this gem and require 'teradata' with JRuby on Rails.

A useful ActiveRecord extension to handle columns containing large amounts of data

Adds support for lazy-loading columns in Active Record models

Something with the combination of Rails 3.1, Mysql2 0.3.x, Capybara, Selenium/Webkit/etc causes Mysql to raise exceptions where the connection is waiting on a result. This gem provides an auto-retry capability with the Mysql2Adapter to retry any query execution up to 5 times. This is a a temporary solution until the real issue with the above libraries/frameworks are resolved. This should NOT be used in production.

An ActiveRecord adapter for MySQL, based on mysql gem.

An ActiveRecord extension for enabling SQL_CACHE and SQL_NO_CACHE in MySQL queries

Adds a :uuid column to ActiveRecord MySQL2 Adapter. Store UUIDs as 16 bytes binary column.

It is a library that performs extended verification when an error occurs when executing SQL.

Implements the Null Object Pattern for nil values in ActiveRecord associations.

PostgreSQL PGCrypto support for ActiveRecord models.

Several extensions to ActiveRecord's PostgreSQLAdapter.

Allows polymorphic loading of has_many through objects

PostGIS Type support for ActiveRecord

This gem adds support to the ActiveRecord (3.x and 4.x) for composite types.

citext support for rails

ActiveRecord support for the PostgreSQL cube data type.