Re: What does this error mean?

On Mon, Jul 23, 2012 at 5:30 AM, ydjango <neerashish@gmail.com> wrote:
>
>
> [Django] ERROR (EXTERNAL IP): Internal Server Error:
>
>
> File
> "/usr/local/lib/python2.6/dist-packages/django/core/handlers/base.py", line
> 111, in get_response
> response = callback(request, *callback_args, **callback_kwargs)
>
> File "/home/ubuntu/webapps/myapp/core/views.py", line 7048, in loadmydata
> my_group, my_address, my_url, my_name= get_info_from_session(request)
>
> File "/home/ubuntu/webapps/myapp/core/myutility.py", line 343, in
> get_info_from_session
> my_group = request.user.groups.all()[0].id
>
> File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py",
> line 173, in __getitem__
> return self._result_cache[k]
>
> IndexError: list index out of range
>
> I get email from django with the above error on above line. The application
> works fine. I do not notice any error on screen. I also do not see error in
> firebug in the network calls. The the view which contains above line is
> called from AJAX calls. I am logged into app and authenticated.
>
> Using Django 1.3.1 and Python 2.6
>
> I can ignore these emails. But any clue what can be causing it?

What is causing the error? Exactly what the error message says: You're
requesting a specific list index. That index is out of range.

Looking at the stack trace, you're trying to retrieve:

request.user.groups.all()[0]

The error is being raised when there *isn't* an element 0 -- that is,
when a user has no groups.

Yours,
Russ Magee %-)

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