website/members/middleware.py
"""Middleware provided by the members package."""
from django.utils.functional import SimpleLazyObject
from members.models import Member
def get_member(request):
try:
return Member.objects.get(pk=request.user.pk)
except AttributeError:
return None
except Member.DoesNotExist:
return None
class MemberMiddleware:
"""Adds the member attribute to requests."""
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
# This needs to be a lazy object as Django REST Frameworks calls the
# the middleware before setting request.user
# This also avoids unnecessary queries when request.member is not used
request.member = SimpleLazyObject(lambda: get_member(request))
return self.get_response(request)