def _get_profile_user(username):
'''Find the :class:`~django.contrib.auth.models.User` and
:class:`~openemory.accounts.models.UserProfile` for a specified
username, for use in profile pages. The specified ``username``
must exist as an :class:`~openemory.accounts.models.EsdPerson`; if
the corresponding :class:`~openemory.accounts.models.UserProfile`
does not yet exist, it will be initialized from LDAP.
Raises a :class:`django.http.Http404` if any of the models cannot
be found or created.
Helper method for profile views (:meth:`rdf_profile` and
:meth:`profile`).
'''
# FIXME: It made sense in the past to require an EsdPerson for every
# User/UserProfile. As of 2012-03-06, this shouldn't be so important.
# At some point we should make this work if the User and UserProfile
# exist (assuming profile.has_profile_page()) even if the EsdPerson
# doesn't.
# retrieve the ESD db record for the requested user
esdperson = get_object_or_404(EsdPerson, netid=username.upper())
# get the corresponding local profile & user
try:
profile = esdperson.profile()
user = profile.user
# 404 if the user exists but should not have a profile page
# (check against UserProfile if there is one, for local profile override)
if not profile.has_profile_page():
raise Http404
except UserProfile.DoesNotExist:
# if local account doesn't exist, make sure ESD indicates the
# user should have a profile before proceeding
if not esdperson.has_profile_page():
raise Http404
# local account doesn't exist but user should have a profile:
# attempt to init local user & profile
backend = EmoryLDAPBackend()
user_dn, user = backend.find_user(username)
if not user:
raise Http404
profile = user.userprofile
return user, profile
