RubyMine 2018.3 Help

Extract Superclass

The Extract Superclass refactoring allows you to extract certain members from a selected class into a new base class. The original class will be inherited from the created base class.

To extract a superclass:

  1. Place a caret at a class name or any place within a class.

  2. Select Refactor | Extract | Superclass... on the main menu.

  3. In the Extract Superclass dialog, specify the superclass name, a directory where it should be placed, and select members to be added:

    Extract Superclass dialog

    Click OK. RubyMine will create a superclass in a separate file.

Example

Before

After

cat.rb file

class Cat def breathe puts "inhale and exhale" end def speak puts "Meow" end end

cat.rb file

require_relative 'mammal.rb' class Cat < Mammal def speak puts "Meow" end end
mammal.rb file
class Mammal < Object def breathe puts "inhale and exhale" end end

Last modified: 6 December 2018

See Also