Provides a database-friendly method for polymorphic relationships

Intelligent caching, no observers necessary

Procore Ruby Gem

Runs regular Rails/ActiveRecord migrations via the Percona Toolkit pt-online-schema-change tool.

SQL queries counter for Rails apps

Creates a directory db/backup in the rails app and creates / loads YML files from there. After a backup, the db/backups directory is archived into a .tgz file and then deleted. When restoring, the db/backup directory is extracted from the .tgz file. All of the files in the 'files' di...

Easily use 64-bit primary keys in Rails

Pattern matching for Rails applications

This is an ActiveRecord integration for the SQL prettifier gem niceql.

Ruby Amazon Web Services Cloud Search Interface

Searchlogic makes using ActiveRecord named scopes easier and less repetitive.

Active Record caching and indexing in memcache.

RecordFilter is a Pure-ruby criteria API for building complex queries in ActiveRecord. It supports queries that are built on the fly as well as named filters that can be added to objects and chained to create complex queries. It also gets rid of the nasty hard-coded SQL that shows up in most Acti...

Recursively delete all dependent model associations without an N + 1

Fast and unobtrusive activity tracking of ActiveRecord models using DataMapper and Redis

Adds support in ActiveRecord for foreign_keys, complex indexes and other database-related stuff. Easily create foreign_keys, complex indexes and views.

Return struct results from ActiveRecord relation queries

Admin interface for RubyOnRails projects inspired by Leaf CMS

A collection of RSpec matchers for web apps.

Rescues unique constraint violations and turns them into ActiveRecord errors