Version:

class Class

Ruby on Rails 2.2.3

Since v2.2.3

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

Extends the class object with class and instance accessors for class attributes, just like the native attr* accessors for instance attributes.

class Person
  cattr_accessor :hair_colors
end

Person.hair_colors = [:brown, :black, :blonde, :red]

These class attributes behave something like the class inheritable accessors. But instead of copying the hash over at the time the subclass is first defined, the accessors simply delegate to their superclass unless they have been given a specific value. This stops the strange situation where values set after class definition don’t get applied to subclasses.

Inherits from

Methods (defined here)

Methods (inherited)

From Object (32)

From ActionController::Caching (3)

From ActionController::Cookies (2)

# cookies
self. included

From ActionController::Flash (1)

self. included

From ActionController::HttpAuthentication::Basic::ControllerMethods (3)

From ActionController::RecordIdentifier (5)

From ActionController::RequestForgeryProtection (8)

From ActionController::Rescue (7)

From ActionController::Streaming (2)

# send_data
# send_file

From ActionController::Translation (4)

# l
# localize
# t
# translate

From ActiveRecord::Callbacks (14)

From ActiveRecord::Dirty (4)

From ActiveRecord::Locking::Pessimistic (1)

# lock!

From ActiveRecord::NamedScope (1)

self. included

From ActiveRecord::Serialization (5)

From ActiveRecord::Transactions (4)

From ActiveRecord::Validations (7)

From Benchmark (1)

self. realtime

From ActionController::Components::InstanceMethods (2)

From ActiveRecord::Locking::Optimistic::ClassMethods (7)

From ActiveRecord::NamedScope::ClassMethods (2)

# named_scope
# scopes

From ActiveRecord::Serialization::ClassMethods (1)

# json_class_name

From ActiveRecord::Validations::ClassMethods (13)

From ActiveSupport::Memoizable (1)

# memoize