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

Common validations for ActiveModel

Serializing models to a single string makes it easy to pass references around.

A Rails validator for immutable attributes.

Interdependent model validations

ActiveModel validator for ip address.

A IPv4 and IPv6 validator for Rails 3 and 4.

Enqueue background jobs from model classes

This gem has been renamed active_model_jobs.

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

Simple password model implemented on top of ActiveModel::Model

Simple password reset model implemented on top of ActiveModel::Model

ActiveModel::Permalink generates permalinks for your ActiveModel objects, including support for Mongoid.

Adds in-memory persistence to ActiveModel models

HasSecureToken provides you an easily way to geneatre uniques random tokens for any model in ruby on rails. **SecureRandom::base58** is used to generate the 24-character unique token, so collisions are highly unlikely.

Adds methods for automatic deserialization from standard JSON and XML, and a variant implementation of serialization/deserialization for XML.

active_model_serializers_binary is a declarative way to serialize/deserialize ActiveModel classes for raw data exchange.