Eliminate the Work.abstract property and move the Document.content property to Work.content instead. Update affected views, and re-base some classes that were deriving from Document just to get Document.content to now be derived from Work instead. The Document class now has a "pass" body with no additional properties. It is debatable whether Work should become Document, since I am not sure that we plan to be able to generically display, say, a Quiz or a Question (which are Works) on the home page (which can only specifically display a Document, or now, the basic Work entity...). Patch by: Todd Larsen Review by: to-be-reviewed

"Dummy cache backend"

from django.core.cache.backends.base import BaseCache

class CacheClass(BaseCache):
    def __init__(self, *args, **kwargs):
        pass

    def add(self, *args, **kwargs):
        return True

    def get(self, key, default=None):
        return default

    def set(self, *args, **kwargs):
        pass

    def delete(self, *args, **kwargs):
        pass

    def get_many(self, *args, **kwargs):
        return {}

    def has_key(self, *args, **kwargs):
        return False