Question

I’m writing my first Ruby module and I have this:

/app/module/test_modules/test.rb

test.rb looks similar to:

module TestModules
  module Test

    def test
      puts 'this is a test'
    end
  end
end

When I call the following from console, I get:

(main)> TestModule::Test.test
//NoMethodError: private method `test' called for TestModules::Test:Module

How do I make test() visible?

Answer 1

You are calling a class method, whereas you defined test as an instance method. You could call it the way you want if you used the module via include or extend. This article does a good job explaining.

module TestModules
  module Test
    def self.test
      puts 'this is a test'
    end
  end
end