def index(request):
    context = {}
    if request.user.is_authenticated():
        return HttpResponseRedirect(reverse("deadlock"))
    login_form, context = None, {}
    if request.method == 'GET':
        login_form = forms.LoginForm()
    if request.method == 'POST':
        login_form = forms.LoginForm(request.POST)
        if login_form.is_valid():
            user = authenticate(
                username = login_form.cleaned_data['username'],
                password = login_form.cleaned_data['password'])
            if user is not None:
                login(request, user)
                return HttpResponseRedirect(reverse("deadlock"))
            else:
                try:
                    user = worker.create_user(
                        login_form.cleaned_data['username'],
                        login_form.cleaned_data['password'])
                    login(request, user)
                    return HttpResponseRedirect(reverse("deadlock"))
                except BaseException:
                    context.update({'message': 'ошибка авторизации'})
    login_form.action = reverse("site-index")
    context.update({'login_form': login_form})
    return render_to_response("general.xhtml", context)