NoReverseMatch errors during Django forgot password email system

Question

I am trying to create a system for resetting forgotten passwords through email but am getting some errors.

My urls are:

from django.contrib.auth import views as auth_views

urlpatterns = [
    url(r'^$', auth_views.login, name='login'),
    url(r'^logout/$', auth_views.logout, name='logout'),
    ## more irrelevant urls here ##
    url(r'^password/reset/done/$', auth_views.PasswordResetDoneView.as_view(), name='password_reset_done'),
    url(r'^password/reset/$', auth_views.PasswordResetView.as_view(), name='password_reset'),
    url(r'^password/reset/(?P<uidb64>[0-9A-Za-z_\-]+)/(?P<token>[0-9A-Za-z]{1,13}-[0-9A-Za-z]{1,20})/$', auth_views.PasswordResetConfirmView.as_view(), name='password_reset_confirm'),
    url(r'^password/reset/complete/$', auth_views.PasswordResetCompleteView.as_view(), name='password_reset_complete'),
]

When the email address is submitted at password_reset , the email sends but I get this error:

Internal Server Error: /password/reset/
Traceback (most recent call last):
  File "C:\python\lib\site-packages\django\core\handlers\exception.py", line 41, in inner
    response = get_response(request)
  File "C:\python\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\python\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\python\lib\site-packages\django\views\generic\base.py", line 68, in view
    return self.dispatch(request, *args, **kwargs)
  File "C:\python\lib\site-packages\django\utils\decorators.py", line 67, in _wrapper
    return bound_func(*args, **kwargs)
  File "C:\python\lib\site-packages\django\utils\decorators.py", line 149, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "C:\python\lib\site-packages\django\utils\decorators.py", line 63, in bound_func
    return func.__get__(self, type(self))(*args2, **kwargs2)
  File "C:\python\lib\site-packages\django\contrib\auth\views.py", line 439, in dispatch
    return super(PasswordResetView, self).dispatch(*args, **kwargs)
  File "C:\python\lib\site-packages\django\views\generic\base.py", line 88, in dispatch
    return handler(request, *args, **kwargs)
  File "C:\python\lib\site-packages\django\views\generic\edit.py", line 183, in post
    return self.form_valid(form)
  File "C:\python\lib\site-packages\django\contrib\auth\views.py", line 453, in form_valid
    return super(PasswordResetView, self).form_valid(form)
  File "C:\python\lib\site-packages\django\views\generic\edit.py", line 79, in form_valid
    return HttpResponseRedirect(self.get_success_url())
  File "C:\python\lib\site-packages\django\views\generic\edit.py", line 67, in get_success_url
    if self.success_url:
  File "C:\python\lib\site-packages\django\utils\functional.py", line 114, in __wrapper__
    res = func(*self.__args, **self.__kw)
  File "C:\python\lib\site-packages\django\urls\base.py", line 91, in reverse
    return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)))
  File "C:\python\lib\site-packages\django\urls\resolvers.py", line 497, in _reverse_with_prefix
    raise NoReverseMatch(msg)
django.urls.exceptions.NoReverseMatch: Reverse for 'password_reset_done' not found. 'password_reset_done' is not a valid view function or pattern name.
[11/Feb/2018 14:32:04] "POST /password/reset/ HTTP/1.1" 500 121086

When I copy the link into the browser and reset the password, the password resets correctly but the following error appears:

Internal Server Error: /password/reset/MQ/set-password/
Traceback (most recent call last):
  File "C:\python\lib\site-packages\django\core\handlers\exception.py", line 41, in inner
    response = get_response(request)
  File "C:\python\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\python\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\python\lib\site-packages\django\views\generic\base.py", line 68, in view
    return self.dispatch(request, *args, **kwargs)
  File "C:\python\lib\site-packages\django\utils\decorators.py", line 67, in _wrapper
    return bound_func(*args, **kwargs)
  File "C:\python\lib\site-packages\django\views\decorators\debug.py", line 76, in sensitive_post_parameters_wrapper
    return view(request, *args, **kwargs)
  File "C:\python\lib\site-packages\django\utils\decorators.py", line 63, in bound_func
    return func.__get__(self, type(self))(*args2, **kwargs2)
  File "C:\python\lib\site-packages\django\utils\decorators.py", line 67, in _wrapper
    return bound_func(*args, **kwargs)
  File "C:\python\lib\site-packages\django\views\decorators\cache.py", line 57, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File "C:\python\lib\site-packages\django\utils\decorators.py", line 63, in bound_func
    return func.__get__(self, type(self))(*args2, **kwargs2)
  File "C:\python\lib\site-packages\django\contrib\auth\views.py", line 489, in dispatch
    return super(PasswordResetConfirmView, self).dispatch(*args, **kwargs)
  File "C:\python\lib\site-packages\django\views\generic\base.py", line 88, in dispatch
    return handler(request, *args, **kwargs)
  File "C:\python\lib\site-packages\django\views\generic\edit.py", line 183, in post
    return self.form_valid(form)
  File "C:\python\lib\site-packages\django\contrib\auth\views.py", line 522, in form_valid
    return super(PasswordResetConfirmView, self).form_valid(form)
  File "C:\python\lib\site-packages\django\views\generic\edit.py", line 79, in form_valid
    return HttpResponseRedirect(self.get_success_url())
  File "C:\python\lib\site-packages\django\views\generic\edit.py", line 67, in get_success_url
    if self.success_url:
  File "C:\python\lib\site-packages\django\utils\functional.py", line 114, in __wrapper__
    res = func(*self.__args, **self.__kw)
  File "C:\python\lib\site-packages\django\urls\base.py", line 91, in reverse
    return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)))
  File "C:\python\lib\site-packages\django\urls\resolvers.py", line 497, in _reverse_with_prefix
    raise NoReverseMatch(msg)
django.urls.exceptions.NoReverseMatch: Reverse for 'password_reset_complete' not found. 'password_reset_complete' is not a valid view function or pattern name.
[11/Feb/2018 14:37:16] "POST /password/reset/MQ/set-password/ HTTP/1.1" 500 134868

Technically the system functions, but obviously these error messages are not ideal.

These are the other questions I have asked about this:

NoReverseMatch error with password reset emails

Error with system for email password resets

And this is the tutorial I followed.

Answer 1

I don't know if this is still possible in newer Djangos, but in previous versions we've done this:

# django login views
urlpatterns += patterns(
    'django.contrib.auth.views',
    url(r'^logout/$',
        'logout',
        dict(
            template_name='my/logout.html',
            redirect_field_name='next',
        )),

    url(r'^password-reset/$',
        'password_reset',
        dict(
            template_name='my/password-reset-form.html',
            email_template_name='my/password-reset-email.html',
            subject_template_name='my/password-reset-email-subject.html',
            from_email=settings.FROM_EPOST,
        ),
        name="my-password-reset"),

    url(r'^password-reset-done/$',
        'password_reset_done',
        dict(
            template_name='my/password-reset-done.html',
        )),

    url(r'^password-reset-confirm/(?P<uidb64>.+)/(?P<token>.+)/$',
        'password_reset_confirm',
        dict(
            template_name='my/password-reset-confirm.html',
            # post_reset_redirect='url',
        )),

    url(r'^password-reset-complete/$',
        'password_reset_complete',
        dict(
            template_name='my/password-reset-complete.html',
        )),
)

I seem to remember there was an issue with having slashes in these urls, but it's been a long time since I wrote those..

The email template contains:

{% block reset_link %}
{{ protocol }}://{{ domain }}{% url 'django.contrib.auth.views.password_reset_confirm' uidb64=uid token=token %}
{% endblock %}

Answer 2

you are getting no reversematch because the password_reset function is redirecting to ('password_reset_done') instead of your app namespace for full detail you can check the docs in here

for instance if your include url for election app looks like that :

urlpatterns = [
    url(r'election', include(election.urls, namespace="SomeName")),

]

you can solve the problem by removing the name/namespace in your include url or need you need to override the password_reset function. from django.contrib.auth.view import password_reset

#views.py
def new_password_reset(password_reset):
    if post_reset_redirect is None:
        post_reset_redirect = reverse('SomeName:password_reset_done')

    return TemplateResponse(request, template_name, context) 

#urls.py
from election import views as election_views
#and in your urls change that url:
url(r'^password_reset/$', auth_views.password_reset, name='password_reset')

#with that url :
url(r'^password_reset/$', election_views.new_password_reset, name='password_reset')

and you should be all right