Django的shortcuts.redirect NoReverseMatch

Question

我從下面的觀點得到NoReverseMatch：

from django.shortcuts import render, redirect 

def new_room(request): 
    label="test" 
    return redirect(chat_room, label=label) 
    # this didn't work either: 
    # return redirect('chat_room', label=label) 

def chat_room(request, label): 
    ... 

我urls.py看起來是這樣的：

from django.conf.urls import url, include 

from messaging import views 

app_name="messaging" 
urlpatterns = [ 
    url(r'^$', views.index, name='index'), 
    url(r'^new/$', views.new_room, name='new_room'), 
    url(r'^(?P<label>[\w-]{,50})/', views.chat_room, name='chat_room'), 
] 

直去messaging/test/將加載頁面正確。這只是導致問題的重定向。

完整堆棧跟蹤：

Environment: 


Request Method: GET 
Request URL: http://127.0.0.1:8000/messages/new/ 

Django Version: 1.10.5 
Python Version: 3.5.2 
Installed Applications: 
['messaging', 
'dal', 
'dal_select2', 
'django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles',, 
'channels'] 
Installed Middleware: 
['django.middleware.security.SecurityMiddleware', 
'django.contrib.sessions.middleware.SessionMiddleware', 
'django.middleware.common.CommonMiddleware', 
'django.middleware.csrf.CsrfViewMiddleware', 
'django.contrib.auth.middleware.AuthenticationMiddleware', 
'django.contrib.messages.middleware.MessageMiddleware', 
'django.middleware.clickjacking.XFrameOptionsMiddleware'] 



Traceback: 

File "g:\Python\lib\site-packages\django\core\handlers\exception.py" in inner 
    39.    response = get_response(request) 

File "g:\Python\lib\site-packages\django\core\handlers\base.py" in _get_response 
    187.     response = self.process_exception_by_middleware(e, request) 

File "g:\Python\lib\site-packages\channels\handler.py" in process_exception_by_middleware 
    240.    return super(AsgiHandler, self).process_exception_by_middleware(exception, request) 

File "g:\Python\lib\site-packages\django\core\handlers\base.py" in _get_response 
    185.     response = wrapped_callback(request, *callback_args, **callback_kwargs) 

File "g:\Git\Jam\messaging\views.py" in new_room 
    26.  return redirect('chat_room', label=label) 

File "g:\Python\lib\site-packages\django\shortcuts.py" in redirect 
    56.  return redirect_class(resolve_url(to, *args, **kwargs)) 

File "g:\Python\lib\site-packages\django\shortcuts.py" in resolve_url 
    147.   return reverse(to, args=args, kwargs=kwargs) 

File "g:\Python\lib\site-packages\django\urls\base.py" in reverse 
    91.  return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))) 

File "g:\Python\lib\site-packages\django\urls\resolvers.py" in _reverse_with_prefix 
    392.    (lookup_view_s, args, kwargs, len(patterns), patterns) 

Exception Type: NoReverseMatch at /messages/new/ 
Exception Value: Reverse for 'chat_room' with arguments '()' and keyword arguments '{'label': 'test'}' not found. 0 pattern(s) tried: [] 

Answer 1

那是因爲你使用namespacing您chat_room應用。

更改爲：

return redirect('messaging:chat_room', label=label) 

檢查here for namespacing，也here too。