If you've gone through the trouble of linking your schema with proper foreign keys, defining associations in ActiveRecord feels like double work. ActiveSchema discovers the associations and validations that can be derived from the database schema.

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Allow to store ActiveModel validations in ORM.

Rails Activity Logger

With ActsAsExpirable, you can mark ActiveRecord records as expired and programmatically find expired record.

Description of ActsAsInterval.

The active record's adapter to the database created by Movable Type

acts_as_normalized lets you fetch records from the database with far fewer return trips than an :includes.

Acts As OQGraph allows ActiveRecord models to use the fast and powerful OQGraph engine for MYSQL.

This 'acts_as' extension provides the capability for having previous next methods for object. Previous & next are based on a specified column (default is id).

Rails StatusBar with ActiveRecord integration, permits dynamic custom output from your model

With ActsAsTaggableOnDynamic, you can tag a single model on several contexts based on the ActsAsTaggableOn gem. This gem extends rails forms support.

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This is not even remotely finished or even started on. Please don't download.

Aktibibo allows an ActiveRecord model to be declared as "activatable". It provides scopes for filtering and convenience methods to set an instance as active, inactive or deactivated. It also saves the activation and deactivation dates.

Associate alarms to any model

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Execute your ActiveRecord migrations with Percona's pt-online-schema-change.

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