Rapid Web Applications with TurboGears: Using Python to Create Ajax-Powered Sites

Chapter 10.2.3. Fine Control on Behavior Using Metadata Class

Each model class has a nested class called sqlmeta that allows you to specify a plethora of interesting attributes such as caching and lazy updates, and a style object to control name translations. This is just a hint of what is to come. We discuss lazyUpdate thoroughly later on. Here is how to turn on lazy updates for the fighter robot:

class FighterRobot(SQLObject):
  class sqlmeta:
    lazyUpdate = True

  name = StringCol()
  weapon_1 = StringCol()
  weapon_2 = StringCol()
  engine = StringCol(default='Basic engine')
  health = IntCol(default=100)