class LoginView(TemplateView):
    template_name = 'my_app/login_form.html'
    form_class = LoginForm

    def get(self, request):
        form = self.form_class(None)
        return render(request, self.template_name, {'form': form})

    def post(self, request):
        form = self.form_class(request.POST)
        if form.is_valid():
            username = form.cleaned_data['username']
            password = form.cleaned_data['password']
            user = authenticate(username=username, password=password)
            if user is not None:
                login(request, user)
            return reverse('my_app:link1')
        else:
            return reverse('my_app:link2')