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Copy pathutils.py
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45 lines (37 loc) · 1.51 KB
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from django.core.cache import cache
from django.core.exceptions import ObjectDoesNotExist
from whisk_tutorial.models import TutorialUser
def get_user_for_request(request):
"""
Function checks for an existing session, and creates one if necessary
then checks for existing tutorialUser, and creates one if necessary
returns this tutorialUser
"""
session_key = request.session._get_or_create_session_key()
return _get_or_create_user(request, session_key)
def _get_or_create_user(request, session_key):
"""
Fetches a user if one exists, creates one otherwise.
"""
cache_prefix = "_get_or_create_user:"
cache_key = cache_prefix + session_key
user = cache.get(cache_key)
if user is None:
try:
user = TutorialUser.objects.filter(
session_key=session_key).latest('pk')
except ObjectDoesNotExist:
user = TutorialUser.objects.create(
session_key=session_key,
# store some metadata about the user
http_user_agent=request.META.get('HTTP_USER_AGENT', ''),
http_remote_address=request.META.get('REMOTE_ADDR', ''),
http_real_remote_address=request.META.get(
'HTTP_X_FORWARDED_FOR', ''),
http_accept_language=request.META.get(
'HTTP_ACCEPT_LANGUAGE', ''),
http_referrer=request.META.get('HTTP_REFERER', '')
)
finally:
cache.set(cache_key, user)
return user