Doesn't hit the DB for counters and existence of a many-to-many association.

Sends a message to kafka whenever an active record instance is created, updated and/or removed.

Protect your record easily

Drop-in ActiveRecord concern that keeps KakugoSearch indexes in sync with your models via save/destroy callbacks, plus a search class method.

Ruby wrapper for Kaltura API on Active Record

Makes sure ActiveRecord collections paged over by kaminari are ordered

An extension to Kaminari pagination that brings the final page of a search results to the surface, and prevents unnecessary paging requests.

This plugin-library allows developers to use ActiveRecord inside their bots

Library that provides user feature, with saving users and their properties

Provides function to import TSV file to MySQL table without create table DDL

ActiveRecord-ish OpenObject Wrapper

Kannuki provides database-agnostic advisory locking for ActiveRecord with support for PostgreSQL and MySQL, offering blocking/non-blocking strategies, instrumentation, and ActiveJob integration.

Kant is a tiny authorization library for your Ruby (especially Rails and/or ActiveRecord) projects.

Searching form and sorting query builder

Kashmir helps you easily define decorators/representers/presenters for ruby objects. Optionally, Kashmir will also cache these views for faster lookups.

A toolkit for building form objects.

Rich content page builder and editor

Prevent ActiveRecord attributes for not null columns with default values from being set to nil. Instead of setting/returning nil the column's default value is returned.

One-stop destination for defining you actionswhen specific Rails instrumentations occur

A comment viewer for http://live.nicovideo.jp/