So is there a viable django solution for this problem?
On Jul 31, 7:50 pm, Malcolm Tredinnick <[email protected]>
wrote:
> On Fri, 2009-07-31 at 19:43 -0700, django user wrote:
> > I'm interested in a solution for this as well.
>
> > I am thinking that a good way might be to rewrite the auth middleware
> > to check and see if a user login for this user exists and if it does
> > then remove that login and log in the current user. A message could
> > then be passed to the login page letting them know that they have
> > logged in elsewhere and their session at this computer was ended.
>
> HTTP is a stateless protocol. By design. As has been pointed out in
> another reply in this thread, the concept of "already logged in" is
> therefore no very well defined. Because it implies there is a concept of
> logged out. Which generally doesn't happen. All you can know is that you
> have seen a particular session cookie before. However, you are not
> guaranteed to know that you will never see a session cookie again in the
> future unless the user explicitly tells you to delete it. And that isn't
> always possible. What if you have browser-based sessions, so the cookies
> expires when the browser is closed. And now the user's browser crashes,
> or they shut it down, or their laptop battery runs out? They no longer
> have the cookie and so they cannot tell you to remove it. That's just
> one of a large number of scenarios in which you are setting things up so
> that users will not be able to use your site as a result of fairly
> normal behaviour of themselves and their computers.
>
>
>
> > I don't know if django has a good way to query if the user is logged
> > in or not...
>
> You cannot query for session identifiers by username, no.
>
> Regards,
> Malcolm
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