在视图的分派方法中，您可以检查用户是否为auth诱使它们并将其重定向到另一个页面，例如：

In the dispatch method of your views you can check if the user is authenticated and redirect them to another page, for example:

class RegistrationView(_RequestPassingFormView):
    ...
    @method_decorator(sensitive_post_parameters('password1', 'password2'))
    def dispatch(self, request, *args, **kwargs):
        """
        Check that user signup is allowed before even bothering to
        dispatch or do other processing.

        """
        if request.user.is_authenticated:
            return redirect('some_url')
        if not self.registration_allowed(request):
            return redirect(self.disallowed_url)
        return super(RegistrationView, self).dispatch(request, *args, **kwargs)

如果user.is_authenticated 阻止已登录和未登录用户访问注册

class RegistrationView(_RequestPassingFormView):
    """
    Base class for user registration views.
    """
    disallowed_url = 'registration_disallowed'
    form_class = REGISTRATION_FORM
    http_method_names = ['get', 'post', 'head', 'options', 'trace']
    success_url = None
    template_name = 'registration/registration_form.html'

    @method_decorator(sensitive_post_parameters('password1', 'password2'))
    def dispatch(self, request, *args, **kwargs):
        """
        Check that user signup is allowed before even bothering to
        dispatch or do other processing.

        """
        if self.request.user.is_authenticated:
            return redirect('/')
        if not self.registration_allowed(request):
            return redirect(self.disallowed_url)
        return super(RegistrationView, self).dispatch(request, *args, **kwargs)

    def form_valid(self, request, form):
        new_user = self.register(request, form)
        success_url = self.get_success_url(request, new_user)

        # success_url may be a simple string, or a tuple providing the
        # full argument set for redirect(). Attempting to unpack it
        # tells us which one it is.
        try:
            to, args, kwargs = success_url
            return redirect(to, *args, **kwargs)
        except ValueError:
            return redirect(success_url)

    def registration_allowed(self, request):
        """
        Override this to enable/disable user registration, either
        globally or on a per-request basis.

        """
        return True

    def register(self, request, form):
        """
        Implement user-registration logic here. Access to both the
        request and the full cleaned_data of the registration form is
        available here.

        """
        raise NotImplementedError