ruby.activerecord.callbacks.sheet

  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