In Ruby, is there a way to 'override' a constant in a subclass so that inherited methods use the new constant instead of the old?

Question

In Ruby, is there a way to \'override\' a constant in a subclass in such a way that calling an inherited method from the subclass results in that method using the new consta

Answer 1

You can refer to a constant like this in the parent class:

For a instance method: self.class::CONST

For a self method: self::CONST

class SuperClass
  CONST = "Hello, world!"
  def print_const
    puts self.class::CONST
  end

  def self.print_const
    puts self::CONST
  end

end

class SubClass < SuperClass
  CONST = "Hello, Bob!"
end

SubClass.new.print_const #=> "Hello, Bob!"
SubClass.print_const #=> "Hello, Bob!"