Generate permalink attributes on ActiveModel/ActiveRecord

Easy denormalization for your ActiveRecord models

Fast Ruby PG csv export. Uses pg function 'copy to csv'. Effective on millions rows.

Takes care of postgres DB consistency for ActiveRecord polymorphic associations via partitioning and inheritance

ActiveRecord extensions for PostgreSQL. Provides useful tools for schema, foreign_key, index, function, trigger, comment and extension manipulations in migrations.

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' directory are also backed up / restored. The default archive file is "site-backup.tgz" but any other one can be passed as an argument to both db:backup:write and db:backup:read, for example: app1$ rake db:backup:write app1$ cd ../app2 app2$ rake db:backup:read[../app1/site-backup.tgz] The environment variable 'verbose' or 'VERBOSE' if defined will result in some verbose output. To add the rake tasks to your Rails app, simply install the gem, and then add the following line to your 'Rakefile': require 'rails-backup-migrate'

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 ActiveRecord code with a clean API that makes queries simple and intuitive to build.

Recursively delete all dependent model associations without an N + 1

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