cheat sheets.

Regular callbacks in ActiveRecord::Base

  1. before_validation
  2. before_validation_on_create
  3. after_validation
  4. after_validation_on_create
  5. before_save
  6. before_create
  7. after_create
  8. after_save
  9. before_destroy
  10. after_destroy

Usage

  class Foo < ActiveRecord::Base
    before_create :do_stuff
  end

Exceptions

  * after_find
  * after_initialize 

Usage

  class Foo < ActiveRecord::Base
    def after_find
      do_stuff
    end
  end