Find next / previous Active Record(s) in one efficient query

Add width, height and size methods to paperclip images

Write Through and Read Through caching library inspired by CacheMoney and cache_fu, support ActiveRecord 4.

Adds ActiveRecord validations that prevent overlapping date/time ranges — bookings, reservations, meetings, shifts. One SQL query; supports scoping and open-ended ranges

Make your model acts as a list. This acts_as extension provides the capabilities for sorting and reordering a number of objects in a list. The class that has this specified needs to have a +position+ column defined as an integer on the mapped database table.

Easy SQL based report generation with the ability to accept request parameters and render multiple formats.

Easily create robust, standardized API endpoints using lightning-fast database queries

Add social network friendship features to your Active Record models.

Migrate large tables without downtime by copying to a temporary table in chunks. The old table is not dropped. Instead, it is moved to timestamp_table_name for verification.

Implements minimal ActiveRecord models and database helper code used in both the Metasploit Framework (MSF) and Metasploit commercial editions.

Never Lose Data. Rather than deleting rows this sets Record#deleted_at and gives you all the scopes you need to work with your data.

Execute RSpec in a distributed manner

Execute RSpec in a distributed manner

Database-backed Rails error subscriber

ActiveRecord extension which adds typecasting to store accessors

Surus accelerates ActiveRecord with PostgreSQL specific types and functionality. It enables indexed searching of serialized arrays and hashes. It also can control PostgreSQL synchronous commit behavior. By relaxing PostgreSQL's durability guarantee, transaction commit rate can be increased by 50% or more.

Send push notifications to mobile apps

Send push notifications to mobile apps

Save migrations and columns by storing multiple booleans in a single integer

This gem allows you to easily use [Hashids](http://hashids.org/ruby/) in your Rails app. Instead of your models using sequential numbers like 1, 2, 3, they will instead have unique short hashes like "yLA6m0oM", "5bAyD0LO", and "wz3MZ49l". The database will still use integers under the hood, so this gem can be added or removed at any time.