Question

I want to call a protected superclass class method from an instance method in the base class.

class A
  class << self
    protected
    def foo
      puts "In foo"
    end
  end
end

class B < A
  def bar
    puts "In bar"
    # call A::foo
  end
end

What’s the best way to do this?

Answer 1

Override the method in B, calling super:

class A
  class << self
    protected
    def foo
      puts "In foo"
    end
  end
end

class B < A

  def self.foo
    super
  end

  def bar
    puts "In bar"
    # call A::foo
    self.class.foo        
  end
end

>> B.foo
=> In foo
>> B.new.bar
=> In bar
=> In foo