Weird django.urls.exceptions.NoReverseMatch: 'review' is not a registered namespace

[Pasquale]

I have in mysite/urls.py:

from django.contrib import admin
from django.urls import include, path
from django.contrib.auth import views as auth_views
from django.conf import settings
from .views import *

urlpatterns = [
    path('admin/', admin.site.urls, name="admin"),
    path("places/", include("places.urls"), name="places"),
    path("review/", include('django_comments_xtd.urls'), name="review"),
    path('accounts/', include('allauth.urls')),
    path("", HomeView.as_view(), name="home")
]

if settings.DEBUG:
    import debug_toolbar
    urlpatterns += [
        path('__debug__/', include(debug_toolbar.urls)),
    ]


and in reviews/urls.py

from django.urls import path, include
from . import views as v
app_name="review"
urlpatterns = [
    path("<int:pk>", v.ReviewsDetail.as_view(), name="detail"),
]
but if I do reverse("review:detail) I get a NoReverseMatch.

How?

[Julien Enselme]

Hi,

- I don't see where you include the urls from the reviews app in your main urls.py file.

- To use the "review:detail" notation, you need to enable namespaces.

So it seems that what you lack in your mysite/urls.py file is path("reviews/", include("reviews.urls", namespace="reviews")) You should then be able to use reverse("reviews:detail").

Julien Enselme

Développeur chez BureauxLocaux

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[Pasquale]

I did put reviews/urls.py:

from django.urls import path, include
from . import views as v
app_name="review"
urlpatterns = [
    path("<int:pk>", v.ReviewsDetail.as_view(), name="detail"),
]

Also if I replace name parameter with namespace I get:
TypeError: _path() got an unexpected keyword argument 'namespace'

[Julien Enselme]

namespace is an argument of the include function and you can remove the name argument to path.

Julien Enselme

Développeur chez BureauxLocaux

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[Pasquale]

Applied your suggestion,now I get
django.urls.exceptions.NoReverseMatch: Reverse for 'detail' not found.
'detail' is not a valid view function or pattern name.

[Julien Enselme]

Did you do the reverse with 'reviews:detail'?

Can you post your new urls.py and the code you use to do the reverse?

Julien Enselme

Développeur chez BureauxLocaux

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[Pasquale]

On 04/09/19 10:24, Julien Enselme wrote:

Did you do the reverse with 'reviews:detail'?

>>> reverse("review:detail")                                                                                                                                                                     
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/paki/.local/share/virtualenvs/lavoro-fabio-n0pBXid0/lib/python3.7/site-packages/django/urls/base.py", line 90, in reverse
    return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))
  File "/home/paki/.local/share/virtualenvs/lavoro-fabio-n0pBXid0/lib/python3.7/site-packages/django/urls/resolvers.py", line 668, in _reverse_with_prefix
    raise NoReverseMatch(msg)

django.urls.exceptions.NoReverseMatch: Reverse for 'detail' not found. 'detail' is not a valid view function or pattern name.

Reverse for 'detail' not found. 'detail' is not a valid view function or pattern name.

Can you post your new urls.py and the code you use to do the reverse?

#mysite/urls.py

from django.contrib import admin

from django.urls import include, path

from django.contrib.auth import views as auth_views

from django.conf import settings

from .views import *

def sane_include(path, namespace):

    return include((path, namespace), namespace=namespace)

app_name = "mysite"

urlpatterns = [

    path('admin/', admin.site.urls, name="admin"),

    path("places/", sane_include("places.urls", namespace="places")),

    path("review/", sane_include('django_comments_xtd.urls',

                                 namespace="review")),

    path('accounts/', sane_include('allauth.urls', namespace="auth")),

    path("", HomeView.as_view(), name="home")

]

if settings.DEBUG:

    import debug_toolbar

    urlpatterns += [

        path('__debug__/', include(debug_toolbar.urls)),

    ]

I did not touch reviews/urls.py
As for the code which does the reverse,it is a fairly standard CreateView which does call get_absolute_url on the newly createdd class,where I return reverse("review:detail",args=[self.id])

[Pasquale]

On 04/09/19 10:24, Julien Enselme wrote:

Did you do the reverse with 'reviews:detail'?

>>> reverse("review:detail")                                                                                                                                                                     

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/paki/.local/share/virtualenvs/lavoro-fabio-n0pBXid0/lib/python3.7/site-packages/django/urls/base.py", line 90, in reverse
    return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))
  File "/home/paki/.local/share/virtualenvs/lavoro-fabio-n0pBXid0/lib/python3.7/site-packages/django/urls/resolvers.py", line 668, in _reverse_with_prefix
    raise NoReverseMatch(msg)

django.urls.exceptions.NoReverseMatch: Reverse for 'detail' not found. 'detail' is not a valid view function or pattern name.

Reverse for 'detail' not found. 'detail' is not a valid view function or pattern name.

Can you post your new urls.py and the code you use to do the reverse?

#mysite/urls.py

from django.contrib import admin

from django.urls import include, path

from django.contrib.auth import views as auth_views

from django.conf import settings

from .views import *

def sane_include(path, namespace):

    return include((path, namespace), namespace=namespace)

app_name = "mysite"

urlpatterns = [

    path('admin/', admin.site.urls, name="admin"),

    path("places/", sane_include("places.urls", namespace="places")),

    path("review/", sane_include('django_comments_xtd.urls',

                                 namespace="review")),

    path('accounts/', sane_include('allauth.urls', namespace="auth")),

    path("", HomeView.as_view(), name="home")

]

if settings.DEBUG:

    import debug_toolbar

    urlpatterns += [

        path('__debug__/', include(debug_toolbar.urls)),

    ]

[Julien Enselme]

Weird. It looks correct to me. I'm out of ideas, sorry.

Julien Enselme

Développeur chez BureauxLocaux

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