This extension creates values which can be used for invoice numbers, personnel numbers and the like.

A Ruby gem that helps the user implement a checkout system by supplying only the promotional rules

A Rails adaptor that encapsulate measurements and their units in Ruby on Rails.

A minimal endpoint for driving server-side validations from a remote UI

Make your model uniq and identifiable through a readable name.

Rails validators for: date, date_time, ip address, mac address

gem install universe-db

The Locode gem gives you the ability to lookup UN/LOCODE codes.

Unreliable helps uncover bugs in Rails apps that rely on ambiguous database ordering. Installing it makes both your app and your test suite more robust.

Untied Consumer Synchronizer.

A ActiveRecord backend for Untied Consumer Sync.

Provides the Publisher part of the Untied gem.

ActiveRecord untraceable save.

Unveil provides a super simple way to specify which of a model's attributes are available to an API in a Ruby on Rails application.

Manage invoices.

Class table inheritance for ActiveRecord based on updatable views in the database that join parent and children tables

A Ruby Gem for you to write update queries.

Changes ActiveRecord's update_attribute (singular) method to behave more intuitively and consistently like update_attributes (plural). ActiveRecord's built-in update_attribute (singular) will not check validations on the object before saving, unlike update_attributes (plural), which will.

This gem adds to ActiveRecord a method update_by_case that allows you to update multiple records based on case values on a single database hit.

postgres database extension to increment/decrement values safely and get back result.