ActiveSupport::Configurable::ClassMethods

config()

    # File activesupport/lib/active_support/configurable.rb, line 30
30:       def config
31:         @_config ||= if respond_to?(:superclass) && superclass.respond_to?(:config)
32:           superclass.config.inheritable_copy
33:         else
34:           # create a new "anonymous" class that will host the compiled reader methods
35:           Class.new(Configuration).new
36:         end
37:       end

config_accessor(*names)

Allows you to add shortcut so that you don’t have to refer to attribute through config. Also look at the example for config to contrast.

  class User
    include ActiveSupport::Configurable
    config_accessor :allowed_access
  end

  user = User.new
  user.allowed_access = true
  user.allowed_access # => true

Source: show | on GitHub

    # File activesupport/lib/active_support/configurable.rb, line 55
55:       def config_accessor(*names)
56:         options = names.extract_options!
57: 
58:         names.each do |name|
59:           reader, line = "def #{name}; config.#{name}; end", __LINE__
60:           writer, line = "def #{name}=(value); config.#{name} = value; end", __LINE__
61: 
62:           singleton_class.class_eval reader, __FILE__, line
63:           singleton_class.class_eval writer, __FILE__, line
64:           class_eval reader, __FILE__, line unless options[:instance_reader] == false
65:           class_eval writer, __FILE__, line unless options[:instance_writer] == false
66:         end
67:       end

configure()

Source: show | on GitHub

    # File activesupport/lib/active_support/configurable.rb, line 39
39:       def configure
40:         yield config
41:       end

Module ActiveSupport::Configurable::ClassMethods