Ghost Method - Illustrates how to use method_missing to support methods that aren't defined

ghost_method.rb

# define our example class
class Example
  # catch all calls to methods that don't exist
  def method_missing(method_name, *args)
    puts "You called '#{method_name}' with these arguments: #{args.inspect}"
  end
end

# invoke methods that haven't been defined
Example.new.some_method # => You called 'some_method' with these arguments: []
Example.new.another_method(1, 2, 3) # => You called 'another_method' with these arguments: [1, 2, 3]
Example.new.this_is_cool(true) # => You called 'this_is_cool' with these arguments: [true]
Example.new.and_powerful # => You called 'and_powerful' with these arguments: []