docs: def login_honeypot(request):
      """
      A login honypot.
      """
      status_code = None
      if request.method == 'POST':
          form = HoneypotForm(request.POST)
          if form.is_valid():
              username = form.cleaned_data["username"]
              password = form.cleaned_data["password"]
  
              # Don't store password from existing users:
              if request.user.is_authenticated(): # Logged in user used the honypot?!?
                  password="***"
              else:
                  user_model = get_user_model()
                  existing_user = user_model.objects.filter(username=username).exists()
                  if existing_user:
                      password="***"
  
              HonypotAuth.objects.add(request, username, password)
  
              # Send a "errored" form back, that looks like the normal form
              form = HoneypotForm(request.POST, raise_error=True)
              status_code = 401 # Unauthorized
      else:
          form = HoneypotForm()
      context = {
          "form": form,
          "form_url": request.path,
      }
  
      response = render_to_response(
          "admin/login.html",
          context, context_instance=RequestContext(request)
      )
      if status_code is not None:
          response.status_code = status_code
      return response