Use timestamp values to represent boolean data such as deleted, published, or subscribed.

Functions from timescaledb available in the ActiveRecord models.

Manage delta indexes via Delayed Job for Thinking Sphinx

A library for validating model association existence.

Useful helpers to consistently migrate Integer id columns to UUID in PostgreSql. Special support for primary keys and references.

Send push notifications to mobile apps

Making object from any hash or hash array

Enable to use the concept of form objects with ActiveModel

Simple gem that allows you to run multiple ActiveRecord::Relation using hash. Perfect for APIs.

Simple gem that allows you to run multiple ActiveRecord::Relation using hash. Perfect for APIs.

ActiveRecord Association Helper for PORO (Plain Old Ruby Object)

Amazon Redshift adapter for ActiveRecord 7.x.

Cursor-based pagination for ActiveRecord.

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

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 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

A tracer for Active Record queries

Activity feeds backed by Redis

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