= CookBook - Manipulators = [wiki:CookBookManipulatorWithPostpopulatedFields] - Much better than the solution below. [wiki:CookBookManipulatorWithHiddenFields Using hidden form fields with an AddManipulator] - When you want to populate some of the fields of the new object using data the system already knows, rather than allowing the user to set them. [wiki:CookBookManipulatorCustomManipulator A Custom Manipulator Class] - A class that makes it easy to create custom manipulators as subclasses.