Weird error message with django-ratings - django

Question

I'm getting a strange error message with [django-ratings][1]. The following is in my urls.py:
url(r'^rate/(?P<object_id>\d+)/(?P<score>\d+)/', AddRatingFromModel(),{
'app_label': 'spiceapp',
'model': 'spice',
'field_name': 'rating',
}),
If I navigate to this page: /spiceapp/rate/1/2, I get the following error:
Caught AttributeError while rendering: 'AddRatingFromModel' object has no attribute 'name'
What would cause this to happen?
Environment:
Request Method: GET
Request URL: http://localhost:8000/spiceapp/rate/1/2/
Django Version: 1.3.1
Python Version: 2.7.2
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.humanize',
'django.contrib.markup',
'mptt',
'treenav',
'djangoratings',
'django.contrib.databrowse',
'pinax.templatetags',
'django_facebook',
'aiteo',
'haystack',
'notification',
'staticfiles',
'debug_toolbar',
'mailer',
'uni_form',
'crispy_forms',
'django_openid',
'ajax_validation',
'timezones',
'emailconfirmation',
'announcements',
'pagination',
'friends',
'messages',
'oembed',
'groups',
'threadedcomments',
'wakawaka',
'swaps',
'tagging',
'bookmarks',
'photologue',
'avatar',
'flag',
'microblogging',
'locations',
'django_sorting',
'tagging_ext',
'smuggler',
'voting',
'pinax.apps.signup_codes',
'pinax.apps.analytics',
'pinax.apps.blog',
'pinax.apps.tribes',
'pinax.apps.photos',
'pinax.apps.topics',
'pinax.apps.threadedcomments_extras',
'about',
'account',
'waitinglist',
'spiceapp',
'bbauth',
'profiles']
Installed Middleware:
['django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django_openid.consumer.SessionConsumer',
'django.contrib.messages.middleware.MessageMiddleware',
'groups.middleware.GroupAwareMiddleware',
'pinax.apps.account.middleware.AuthenticatedMiddleware',
'pinax.apps.account.middleware.LocaleMiddleware',
'django.middleware.doc.XViewMiddleware',
'pagination.middleware.PaginationMiddleware',
'django_sorting.middleware.SortingMiddleware',
'pinax.middleware.security.HideSensistiveFieldsMiddleware',
'debug_toolbar.middleware.DebugToolbarMiddleware']
Template error:
In template /Users/nb/Desktop/myenv2/lib/python2.7/site-packages/debug_toolbar/templates/debug_toolbar/base.html, error at line 48
Caught AttributeError while rendering: 'AddRatingFromModel' object has no attribute '__name__'
38 : </div>
39 : {% for panel in panels %}
40 : {% if panel.has_content %}
41 : <div id="{{ panel.dom_id }}" class="panelContent">
42 : <div class="djDebugPanelTitle">
43 : {% trans "Close" %}
44 : <h3>{{ panel.title|safe }}</h3>
45 : </div>
46 : <div class="djDebugPanelContent">
47 : <div class="scroll">
48 : {{ panel.content|safe }}
49 : </div>
50 : </div>
51 : </div>
52 : {% endif %}
53 : {% endfor %}
54 : <div id="djDebugWindow" class="panelContent"></div>
55 : </div>
56 :
Traceback:
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
178. response = middleware_method(request, response)
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/debug_toolbar/middleware.py" in process_response
104. smart_unicode(self.debug_toolbars[request].render_toolbar() + self.tag))
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/debug_toolbar/toolbar/loader.py" in render_toolbar
78. return render_to_string('debug_toolbar/base.html', context)
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/loader.py" in render_to_string
183. return t.render(Context(dictionary))
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/test/utils.py" in instrumented_test_render
60. return self.nodelist.render(context)
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/base.py" in render
744. bits.append(self.render_node(node, context))
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/debug.py" in render_node
73. result = node.render(context)
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/defaulttags.py" in render
227. nodelist.append(node.render(context))
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/defaulttags.py" in render
311. return self.nodelist_true.render(context)
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/base.py" in render
744. bits.append(self.render_node(node, context))
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/debug.py" in render_node
73. result = node.render(context)
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/debug.py" in render
90. output = self.filter_expression.resolve(context)
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/base.py" in resolve
510. obj = self.var.resolve(context)
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/base.py" in resolve
653. value = self._resolve_lookup(context)
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/django/template/base.py" in _resolve_lookup
698. current = current()
File "/Users/nb/Desktop/myenv2/lib/python2.7/site-packages/debug_toolbar/panels/request_vars.py" in content
35. 'view_func': '%s.%s' % (self.view_func.__module__, self.view_func.__name__),
Exception Type: TemplateSyntaxError at /spiceapp/rate/1/2/
Exception Value: Caught AttributeError while rendering: 'AddRatingFromModel' object has no attribute '__name__'

Answer 1

This looks like an old bug in django-debug-toolbar. Do you happen to know which version you are using? Because the file looks like the one in this commit. Several fixes has been made to that file since then: this one, for example seems to address specifically your issue.
In any case, the version you're using seems to predate the 2nd of June, 2011. I would try looking into updating your environment.