Hi everyone,
I've started working on an application after some trime, but I can not get
it to run again.
I've got this error:
Reverse for '' with arguments '()' and keyword arguments '{}' not found.
0 pattern(s) tried: []
Internal Server Error: /substances/
Traceback (most recent call last):
File "C:\Python27\lib\site-packages\django\core\handlers\base.py", line
164, in get_response
response = response.render()
File "C:\Python27\lib\site-packages\django\template\response.py", line 158
, in render
self.content = self.rendered_content
File "C:\Python27\lib\site-packages\django\template\response.py", line 135
, in rendered_content
content = template.render(context, self._request)
File "C:\Python27\lib\site-packages\django\template\backends\django.py",
line 74, in render
return self.template.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py", line 209, in
render
return self._render(context)
File "C:\Python27\lib\site-packages\django\template\base.py", line 201, in
_render
return self.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py", line 903, in
render
bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py", line 79, in
render_node
return node.render(context)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py", line
135, in render
return compiled_parent._render(context)
File "C:\Python27\lib\site-packages\django\template\base.py", line 201, in
_render
return self.nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py", line 903, in
render
bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py", line 79, in
render_node
return node.render(context)
File "C:\Python27\lib\site-packages\django\template\defaulttags.py", line
329, in render
return nodelist.render(context)
File "C:\Python27\lib\site-packages\django\template\base.py", line 903, in
render
bit = self.render_node(node, context)
File "C:\Python27\lib\site-packages\django\template\debug.py", line 79, in
render_node
return node.render(context)
File "C:\Python27\lib\site-packages\django\template\defaulttags.py", line
507, in render
six.reraise(*exc_info)
File "C:\Python27\lib\site-packages\django\template\defaulttags.py", line
493, in render
url = reverse(view_name, args=args, kwargs=kwargs, current_app=
current_app)
File "C:\Python27\lib\site-packages\django\core\urlresolvers.py", line 579
, in reverse
return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix,
*args, **kwargs)))
File "C:\Python27\lib\site-packages\django\core\urlresolvers.py", line 496
, in _reverse_with_prefix
(lookup_view_s, args, kwargs, len(patterns), patterns))
NoReverseMatch: Reverse for '' with arguments '()' and keyword arguments
'{}' not found. 0 pattern(s) tried: []
[13/Jul/2015 15:32:02]"GET /substances/ HTTP/1.1" 500 185051
It happens when it encounters the first reverse lookup:
<li><a href=" {% url substance_list %} ">Stubstances</a></li>
I've traced it down to the render method in the URLNode class (in
defaulttags), where
view_name = self.view_name.resolve(context)
returns an empty string.
I have the following URL configurations
site urls.py:
urlpatterns = (
url(r'^$', lambda r : HttpResponseRedirect('substances/')),
url(r'^norights/', TemplateView.as_view(template_name="norights.html"),
name="norights"),
url(r'^substances/', include('substances.urls')),
url(r'^suppliers/', include('suppliers.urls')),
url(r'^users/', include('users.urls')),
url(r'^sources/', include('sources.urls')),
url(r'^media/(.*)$', 'django.views.static.serve', {'document_root' :
settings.MEDIA_ROOT}, name="media"),
)
app urls.py
urlpatterns = (
url(r'^$', SubstanceListView.as_view(), name =
'substance_list'),
url(r'^create$', SubstanceCreateView.as_view(), name =
'substance_create'),
url(r'^update/(?P<pk>\d+)$', SubstanceUpdateView.as_view(), name =
'substance_update'),
url(r'^detail/(?P<pk>\d+)$', SubstanceDetailView.as_view(), name =
'substance_detail'),
url(r'^mutate/(?P<pk>\d+)$', SubstanceMutateView.as_view(), name =
'substance_mutate'),
url(r'^delete/(?P<pk>\d+)$', SubstanceDeleteView.as_view(), name =
'substance_delete'),
url(r'^mutate_check_ajax/(?P<pk>\d+)$', mutate_check_ajax, name =
'mutate_check_ajax'),
url(r'^component_check_ajax$', component_check_ajax, name =
'component_check_ajax'),
url(r'^supplier_check_ajax$', supplier_check_ajax, name =
'supplier_check_ajax'),
url(r'^report', substance_report, name =
'substance_report'),
url(r'^worksheet/(?P<pk>\d+)$', substance_worksheet, name =
'substance_worksheet')
)
Oddly enough I did not change anything to get the error. Afterwards I
upgraded to Django 1.8.3, but that did not matter.
Thanks,
Vincent
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