Very simple automatic generation and saving nested attributes of models from html form. ActiveModel.

This plugin allows models to generate a unique "slug" (url-enabled name) from any regular attribute. Add friendly URLs to your models with one line.

Slugger is yet another slug generator.

Easy slug functionality

SO2DB provides an API for building StackOverflow data dump importers. It ships with a PostgreSQL implementation and binary.

ActiveRecord plugin

This gem provides an acts_as_list compatible capability 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. This gem requires ActiveRecord 3.0 as it has been refactored to use the scope methods and query interface introduced with Ruby on Rails 3.0

Sortiri is a clean and lightweight solution for making ActiveRecord::Base objects sortable.

This collection of gems will spice up your rails and kick your rubies up a notch. Bam!

A simple SQL builder for generate SQL for non-ActiveRecord supports databases.

Check your footprint file into source control

Adds REGEXP support for SQLite3 in ActiveRecord.

A gem for caching HTTP responses

citext support for rails (STAQ version)

citext support for rails (STAQ version)

State of the Nation makes modeling object history easy.

Statistic and analysis in Ruby DSL, just as simple as SQL operations in ActiveRecord.

ActiveRecord has always stored the base class in polymorphic _type columns when using STI. This can have non-trivial performance implications in certain cases. This gem adds 'store_base_sti_class' configuration options which controls whether ActiveRecord will store the base class or the actual class. Default to true for backwards compatibility.

Nested fields for ActiveRecord::Store

Extension for ActiveRecord models to manage synchronizing data in support/lookup tables across environments. Also provides the ability to directly reference and test for specific rows in these tables.