Utsusemi is a soft deleted as efficiently approach.

Providing a flexible alias for column names in ActiveRecord.

Adds association_uuids= method on has_many and has_and_belongs_to_many associations

UUID attribute for ActiveRecord

A simple gem to automatically add UUID to activerecord migrations

Generate and find by UUIDs in ActiveRecord models

A Library to programmatically create wsdl and soap apis in a rails project

Automatically validate ActiveRecord models based on the database schema.

Allow for validation of only some attributes

Add Japanese validators

Automatically validate limits for ActiveRecord attributes.

Automatically adds validations to ActiveRecord models that match your database constraints

Adds validates_associated_with_context to models to validate associated models with validation context

Validates wether an association belongs to the same owner

This RubyGem allows you to prevent particular database fields from being changed after an Active Record object is created. A validation error occurs on updates if an attribute of a model object is different from its value in the database.

Rails plugin that uses George Carlin's list of seven dirty words (aka swear words, aka cuss words) to check for decency on ActiveRecord model attributes.

ActiveRecord callback which handle the name duplication in your model.

Rails 2 and Rails 3 plugin. Validates e-mail address format (RFC2822 and RFC3696) and whitelist/blacklist the domain part.

Adds ActiveModel validators for common instant messaging services like Skype and AIM.

Validations for making ActiveRecord objects immutable.