Take advantage of the Model inheritance provided by polymodel.PolyModel to have create a class hierarchy rooted at Person. Also, add some missing Role classes, such as Role, (Organization) Mentor, (Club) Member, (School) Student. Make (Organization) Administrator be a Reviewer like Mentor is. Patch by: Todd Larsen Review by: Pawel Solyga, Sverre Rabbelier, Augie Fackler Review URL: http://codereviews.googleopensourceprograms.com/607

class BaseCreation(object):
    """
    This class encapsulates all backend-specific differences that pertain to
    database *creation*, such as the column types to use for particular Django
    Fields.
    """
    pass