Amazon Redshift adapter for ActiveRecord 7.x.

ActiveRecordDistinctOn adds support for `DISTINCT ON` to ActiveRecord. At the time of this writing, PostgreSQL is the only database which supports this syntax; however, this gem has been written with database independence in mind so that if another Arel visitor adds support for `Arel::Nodes::DistinctOn` in the future, it should work seamlessly.

Back-ports generated column support, deferred foreign key support, custom foreign key support, improved default configuration, and adds support for pragma tuning and extension loading

An ActiveRecord extension providing convenience methods for timestamp management.

ActiveRecord connection adapter for MySQL. It is based on the stock MySQL adapter, and adds built-in support for the spatial extensions provided by MySQL. It uses the RGeo library to represent spatial data in Ruby. This gem is maintained for MySQL 8.0 and 8.4.

This is an ActiveRecord connection adapter for MySQL Spatial Extensions. It is based on the stock MySQL2 adapter, but provides built-in support for spatial columns. It uses the RGeo library to represent spatial data in Ruby.

Yet Another N+1 COUNT Query Killer for ActiveRecord

This gem allows automatic connection switching between a primary and one read replica database in ActiveRecord. It pattern matches the SQL statement being sent to decide whether it should go to the replica (SELECT) or the primary (INSERT, UPDATE, DELETE).

A tracer for Active Record queries

This gem extends ActiveRecord::Base to add automatic updating of created_by and updated_by attributes of your models in much the same way that the ActiveRecord::Timestamp module updates created_(at/on) and updated_(at/on) attributes.

Activity feeds backed by Redis

Use Youtube-Like ID in ActiveRecord seamlessly.

Represent ActiveRecord Markdown, Textile, RDoc columns as Markdown, Textile, RDoc objects using various external libraries to convert to HTML.

It just makes sense to store mutable, site-wide, admin-level settings in the database. Right? A key-value table may be more flexible, but maybe we don't want to be flexible! If you truly want that flexibility: http://github.com/stephencelis/kvc

Creates aliases of ActiveRecord named scopes.

ActiveModel Serializers addon for eliminating N+1 queries problem from the serializers.

Arel is a Relational Algebra for Ruby. It 1) simplifies the generation complex of SQL queries and it 2) adapts to various RDBMS systems. It is intended to be a framework framework; that is, you can build your own ORM with it, focusing on innovative object and collection modeling as opposed to database compatibility and query generation.

Generates attr_accessors that encrypt and decrypt attributes transparently

A simple gem that audit ActiveRecord models' attributes or methods by taking snapshots and diff them for you. Starting from scratch to work with Rails 3.2.2 onwards

Execute any ActiveRecord Model method in the background