A behavior validator for Rails 3 and 4.

A Rails validator based on CanCan.

Provides coercions for ActiveModel objects

CSV Validator for Active Model

Extends ActiveModel::Errors to allow messages to be generated that do not use the attribute name

Builds a tree of errors instead of the 1-dimension one generated by ActiveMode::Base#errors.messages.

Allows to get errors type from an activemodel class, as a symbol, prior to the translation

Some Extension::Extensions for your ActiveModel::Models

Common validations for ActiveModel

This gem adds the ability for models to have an unlimited number of custom flags \ that are stored within one database column cell instead of several columns.

A Rails validator for immutable attributes.

Interdependent model validations

ActiveModel validator for ip address.

A IPv4 and IPv6 validator for Rails 3 and 4.

This gem has been renamed active_model_jobs.

Enqueue background jobs from model classes

A simple json validator based on ActiveModel.

Provides the ActiveModel::Lint::Tests for test-unit or minitest an RSpec shared example.

Provides a Logger::LogDevice that can save Ruby Logger messages to an array in your model

Render your JSON in a Normalizr-like JSON format