def get_user(request):
from cloudengine.users.models import AnonymousAppUser
try:
user_id = request.session[SESSION_KEY]
backend = ModelBackend()
user = backend.get_user(user_id) or AnonymousAppUser()
except KeyError:
user = AnonymousAppUser()
if not hasattr(request, '_cached_app_user'):
request._cached_app_user = user
return request._cached_app_user
def authenticate(**credentials):
"""
If the given credentials are valid, return a AppUser object.
"""
backend = ModelBackend()
user = backend.authenticate(**credentials)
if user:
return user
app_user_login_failed.send(sender=__name__,
credentials=_clean_credentials(credentials))
