Django 2.0 'name' is not a registered namespace

Question

I\'ve seen this error posted several times, but I can\'t find anyone using Django 2.0 and having the problem.

The problem cropped up when I tried to nest one app inside

Answer 1

There are two ways can hanlded this.

Firstly,you can set an app_name attribute in the included URLconf module, at the same level as the urlpatterns attribute. You have to pass the actual module, or a string reference to the module, to include(), not the list of urlpatterns itself.

https://docs.djangoproject.com/en/2.0/topics/http/urls/#url-namespaces-and-included-urlconfs

urls.py

from django.urls import include, path

urlpatterns = [
    path('polls/', include('polls.urls')),
]

polls/urls.py

from django.urls import path

from . import views

app_name = 'polls'
urlpatterns = [
    path('', views.IndexView.as_view(), name='index'),
    path('<int:pk>/', views.DetailView.as_view(), name='detail'),
    ...
]

have fun!

Answer 2

Set users as the value of the namespace keyword argument of include method to set the appropriate application namespace:

path('users/', include('users.urls', namespace='users'))

Answer 3

You need to actually tell it what the namespace is.

Change this line:

path('users/', include('users.urls')),

to:

path('users/', include('users.urls', namespace="users")),

Read the documentation

Answer 4

Because the "learning_logs" URL namespaces includes the "users" one, they are considered to be nested. So when you want to find a URL inside "users" you need to use both names in your url tags:

<a href="{% url 'learning_logs:users:logout' %}">log out</a>

Answer 5

I had the same issue but managed to solve the issue by ensuring that project urls.py has a path to view that manages the app, in this case users.

Answer 6

Try to change your app_name='' in learning_logs/urls.py. (Create if there is not any.)

In the first learning_logs app you forgot s in the end (e.g. app_name = 'learning_logs')