Hi there ...

(this is also posted to 
stackoverflow: 
http://stackoverflow.com/questions/1504537/django-session-intermittently-disappears-just-after-login)

In my django app, I handle login in the following manner. Users go to a
gateway page (index.html) - if they are not currently logged in, there
will be a login/password form along with the other material. On successful
login (or if they otherwise go to that page while logged in), the page is
rendered slightly differently (sans login form).

The way I am handling that is in the view for index.html I do:

logged_in = request.user.is_authenticated()

and then the logged_in variable is passed to the template, which is
checked to see which version of the page it renders.

When a user logs in, the login view calls:

user = authenticate(username=username, password=password)
if user is not None:
   login(request, user)

And then they are redirected back to index.html.

More often than not, this works perfectly fine. What I see though is that
sometimes between the HttpResponseRedirect and the index view is that
request.user is wiped out. I have been logging this for a while now,
writing to the log as the last item in the login view and first item in
the index view. The effect it has for the user is that it looks like they
incorrectly logged in (except w/ no message telling them that).

It does seem to come in spurts, as in the system will be fine for a while,
and then I'll see it happen to a user 4-5 times in a row. I should also
note that I've never seen/heard of this happening at any point except at
the login, as far as I can tell (it is possible that it has happened and
no one has complained) once they're in, they're in.

Am I doing something obviously wrong with my login methodology here?



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