Atomic update of JSON/JSONB fields for ActiveRecord models

Pub sub and websockets

Attach documents & files to Active Record models

Adds has_attachment (file store) properties to ActiveRecord. Supports local file, file-in-db, S3 and Cloudfiles backends.

A high performance ActiveRecord concern for Rails using the PostgreSQL array type.

Provides functionality to transparently store and retrieve encrypted attributes in ActiveRecord models.

Allows you to define CSV-style attributes for your ActiveRecord models

A method for restricting an attribute to a set of choices

Allow attribute-level read/write access control, per instance, of any ActiveModel class.

Allows step change for attributes.

Add default attribute values when creating models.

AttributeDelegator provides a class method to ActiveRecord models that dynamically generates getter/setter to treat the attributes of a has_one model like native attributes. This is particularly useful because it allows the delegated attributes to be assigned via model.attributes= {}, such as by a form submission.

A model attribute enums plugin for Rails3. like 'symbolize' gem.

Builds macros to automatically manipulate your models' attributes.

Concise way of filtering model attributes in Rails.

Date-granular history for specified model fields. Compact & easy to query.

ActiveRecord/ActiveModel validation extension which enables attributes validation.

Attribute inheritance for ActiveRecord models

Rails plugin that provides attr_initializable helper to declare read-only attributes that can be mass-assigned at model creation time

An association extension for attr_json