... 257after_create( ), 121, 265 after_destroy( ), 265 after_find( ), 267 , 269 after_initialize(), 267 after_save(), 265 after_update( ), 265 after_validation( ), 265 after_validation_on_create(), 265 after_validation_on_update(), ... 4 86 515:descendent parameter, 155Desktop applicationemulating on Web, 374destroy() method, 215, 2 26, 241, 4 36 Destroy command, 1 76 see also Generate commanddestroy_all() method, 215, 4 36 Development reloading ... 208before_create( ), 121, 265 before_destroy( ), 127, 265 before_save( ), 265 before_update(), 265 before_validation(), 265 before_validation_on_create(), 265 before_validation_on_update(), 265 _before_type_cast,...