Create module variables in Ruby
Ruby natively supports class variables in modules, so you can use class variables directly, and not some proxy or pseudo-class-variables:
module Site @@name = "StackOverflow" def self.setName(value) @@name = value end def self.name @@name endendSite.name # => "StackOverflow"Site.setName("Test")Site.name # => "Test"
If you do not need to call it from within an instance, you can simply use an instance variable within the module body.
module SomeModule module_function def param; @param end def param= v; @param = v endendSomeModule.param# => nilSomeModule.param = 1SomeModule.param# => 1The instance variable @param will then belong to the module SomeModule, which is an instance of the Module class.
you can set a class instance variable in the module.
module MyModule class << self; attr_accessor :var; endendMyModule.var = 'this is saved at @var'MyModule.var => "this is saved at @var"