- Author:
- [email protected]
- Posted:
- September 30, 2008
- Language:
- Python
- Version:
- 1.0
- Score:
- 2 (after 4 ratings)
Django SITE_ID is a global setting, so the site framework requires you to run multiple instances of Django; at least one for each site. But i want have one instance for multiple sites. This snippet solve this task by change SITE_ID on fly. /sorry my bad english/
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | # 1) site_id_hook.py
from threading import local
SITE_THREAD_INFO = local()
class SiteIDHook:
def __int__(self):
return SITE_THREAD_INFO.SITE_ID
def __hash__(self):
return SITE_THREAD_INFO.SITE_ID
# 2) settings.py
.....
from site_id_hook import SiteIDHook, SITE_THREAD_INFO
SITE_ID = SiteIDHook()
....
# 3) site_middleware.py (simple middleware)
class SiteOnFlyDetectionMiddleware:
def process_request(self, request):
sid = None
host = request.META.get('HTTP_HOST')
# ...
# any logic for `sid`
#...
settings.SITE_THREAD_INFO.SITE_ID = sid
Ok, now settings.SITE_ID will change in middleware on fly.
|
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Comments
interesting concept. i have tried out the solution that you outlined above but it does not seem to work with the CurrentSiteManager, which is part of the Sites framework. i am seeing the error:
'thread._local' object has no attribute 'SITE_ID'
when i attempt to retrieve an object that uses the CurrentSiteManager:
obj = MyModel.on_site.get(slug=slug)
where on_site is the manager designation in the model:
on_site = CurrentSiteManager()
slug is a field that is not unique in the system but is restricted by the unique_together constraint, with slug and site as the two values.
have you run into this problem?
#
I am not using
CurrentSiteManager()
at the moment, but I also encountered the error:Placing this snippet's middleware (site_middleware.py above) first in
settings.MIDDLEWARE_CLASSES
seems to have fixed the problem.I think the error was due to
django.middleware.common.CommonMiddleware
trying to accessSITE_ID
before it was set by this snippet's middleware.#
thanks for the quick response. that seems to have fixed the problem. unfortunately, i now experience intermittent problems while using date based generic views. i send the queryset to the generic view from urls.py :
(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{1,2})/(?P<slug>[-\w]+)/$', object_detail, dict(queryset=MyModel.on_site.filter(active=True),date_field='pub_date', slug_field='slug', month_format='%m', allow_future=False)),
for example, and the object_detail view will not find the desired object in the queryset because the queryset contains a result that is from another site. normally, the object_detail view will return a 404 if it does not find what it is looking for, but i removed that try/except part of that view for testing to see the actual error and i can see the queryset is for a different site than the one on which i am currently navigating.
i suspect that creating a custom wrapper view around the object_detail view that passes the queryset from that view instead of from the urls.py file, will solve the problem, but i am not certain. i have been looking at the threaded_multihost project but my first tests revealed that this solution is better suited to my needs, so i will report back if i find a solution.
#
0) it's work
1) i use this:
MIDDLEWARE_CLASSES = ( 'django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.middleware.doc.XViewMiddleware', <br /> 'myproject.app.middleware.SiteDetectionMiddleware', )
2) i use this logic for detect SITE_ID:
class SiteDetectionMiddleware:
#
of course it's does not work for unit-testing, but it's does work for ftesting.
#
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