django - Django 2 中的自定义 LoginView

Question

我正在尝试在 Django 2 中自定义身份验证和 View ，但问题是，如果用户已经通过身份验证，则仍会显示登录表单，并且不会重定向到适当的 URL。为了克服这个问题，我做了以下工作:

class CustomLoginView(LoginView):

    form_class = LoginForm
    template_name = 'login.html'

    def get_initial(self):
        if self.request.user.is_authenticated and self.request.user.is_staff and has_2fa(self.request.user):
            return HttpResponseRedirect(reverse('{}'.format(self.request.GET.get('next', 'portal_home'))))
        else:
            return self.initial.copy()

    def form_valid(self, form):

        if self.request.user.is_staff and not has_2fa(self.request.user):
            logger.info('is staff but does not have 2FA, redirecting to Authy account creator')
            auth_login(self.request, form.get_user())
            return redirect('2fa_register')
        auth_login(self.request, form.get_user())

        return HttpResponseRedirect(self.get_success_url())

但是get_initial()中的HttpResponseRedirect不会重定向到/portal/页面。我也尝试过 redirect('portal_home') 但没有任何反应，还是我需要编写自定义 dispatch？

任何帮助将不胜感激。

Answer 1

重写 get() 可以解决问题，请参阅 https://docs.djangoproject.com/en/dev/ref/class-based-views/mixins-editing/#django.views.generic.edit.ProcessFormView

class CustomLoginView(LoginView):
    """
    Custom login view.
    """

    form_class = LoginForm
    template_name = 'login.html'

    def get(self, request, *args, **kwargs):
        if self.request.user.is_authenticated and self.request.user.is_staff and has_2fa(self.request):
            return redirect('{}'.format(self.request.GET.get('next', 'portal_home')))

        return super(CustomLoginView, self).get(request, *args, **kwargs)

    def form_valid(self, form):

        if self.request.user.is_staff and not has_2fa(self.request):
            logger.info('is staff but does not have 2FA, redirecting to Authy account creator')
            auth_login(self.request, form.get_user(), backend='django.contrib.auth.backends.ModelBackend')
            return redirect('2fa_register')

        return super(CustomLoginView, self).form_valid(form)