Why would visitor be none when getting comments

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I'm having a problem with a custom askbot setup that I'm finding rather hard to diagnose. When attempting to run two particular unit tests together, I'm getting the following error:

    /my/home/directory/workspace/my/project/directory/.ve/lib/python2.6/site-packages/askbot/middleware/pagesize.py TIME: 2011-09-06 11:40:17,935 MSG: pagesize.py:process_exception:43   File "/my/home/directory/workspace/my/project/directory/.ve/lib/python2.6/site-packages/django/core/handlers/base.py", line 100, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/my/home/directory/workspace/my/project/directory/../rimawebsites/forum/views/readers.py", line 15, in question
    **kwargs)
  File "/my/home/directory/workspace/my/project/directory/../rimawebsites/forum/views/render.py", line 5, in render_jinja2_into_django_template
    response = jinja2_view(request, *args, **kwargs)
  File "/my/home/directory/workspace/my/project/directory/.ve/lib/python2.6/site-packages/django/utils/decorators.py", line 76, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "/my/home/directory/workspace/my/project/directory/.ve/lib/python2.6/site-packages/askbot/views/readers.py", line 552, in question
    return render_into_skin('question.html', data, request)
  File "/my/home/directory/workspace/my/project/directory/.ve/lib/python2.6/site-packages/askbot/skins/loaders.py", line 145, in render_into_skin
    return HttpResponse(template.render(context), mimetype = mimetype)
  File "/my/home/directory/workspace/my/project/directory/.ve/lib/python2.6/site-packages/coffin/template/__init__.py", line 54, in render
    return super(Template, self).render(**context)
  File "/my/home/directory/workspace/my/project/directory/.ve/lib/python2.6/site-packages/jinja2/environment.py", line 894, in render
    return self.environment.handle_exception(exc_info, True)
  File "/my/home/directory/workspace/my/project/directory/forum/skins/rima_skin/templates/question.html", line 2, in top-level template code
    {% import "macros.html" as macros %}
  File "/my/home/directory/workspace/my/project/directory/forum/skins/rima_skin/templates/two_column_body.html", line 1, in top-level template code
    {% extends "base.html" %}
  File "/my/home/directory/workspace/my/project/directory/forum/skins/rima_skin/templates/base.html", line 5, in top-level template code
    {% block body %}
  File "/my/home/directory/workspace/my/project/directory/forum/skins/rima_skin/templates/two_column_body.html", line 6, in block "body"
    {% block content%}
  File "/my/home/directory/workspace/my/project/directory/forum/skins/rima_skin/templates/question.html", line 141, in block "content"
    macros.post_comments_widget(
  File "/my/home/directory/workspace/my/project/directory/forum/skins/rima_skin/templates/macros.html", line 498, in template
    {% spaceless %}
  File "/my/home/directory/workspace/my/project/directory/.ve/lib/python2.6/site-packages/coffin/template/defaulttags.py", line 369, in _strip_spaces
    return strip_spaces_between_tags(caller().strip())
  File "/my/home/directory/workspace/my/project/directory/forum/skins/rima_skin/templates/macros.html", line 511, in template
    {% set comments = post.get_comments()[:max_comments] %}
  File "/my/home/directory/workspace/my/project/directory/.ve/lib/python2.6/site-packages/askbot/models/content.py", line 56, in get_comments
    if visitor.is_anonymous():

/my/home/directory/workspace/my/project/directory/.ve/lib/python2.6/site-packages/askbot/middleware/pagesize.py TIME: 2011-09-06 11:40:17,935 MSG: pagesize.py:process_exception:44 <type 'exceptions.AttributeError'>
/my/home/directory/workspace/my/project ...

(more)

asked 2011-09-06 06:15:20 -0600

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The macro calls had been changed so that the "visitor" parameter was no longer assigned when calling. I.E.

 post.get_comments(visitor = user)

had become

 post.get_comments()

Changing it back solved the problem.

Daniel

updated 2011-09-06 10:05:08 -0600, answered 2011-09-06 10:00:35 -0600

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Oh, that would do it, thanks.

Evgeny (2011-09-06 10:04:15 -0600) edit

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Do you have django.contrib.auth properly enabled?

You'll need the following in the MIDDLEWARE_CLASSES setting (among others):

'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',

And in the INSTALLED_APPS:

'django.contrib.auth',
'django.contrib.sessions',

Value of the visitor comes from request.user, which is installed onto the request object by the auth system. If the user is authenticated, then instance of real user object will be added, otherwise - an instance of AnonymousUser. In your case you are getting None.