Inheriting Callbacks

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mosop edited this page Jan 19, 2017 · 6 revisions

Subclasses can inherit callbacks by inherit_callback_group.

class Super
  Callback.enable
  define_callback_group :super

  before_super do
    puts "super"
  end
end

class Sub < Super
  inherit_callback_group :super

  before_super do
    "super in sub"
  end
end

Super.new.run_callbacks_for_super {}
Sub.new.run_callbacks_for_super {}

This prints:

super
super
super in sub