我是看的Django Book的教程，然后用最原始的方式实现的。请问关于登录和注册，Django有没有封装像ListView, DetailView, FormView这样的class来直接实现呢？

这是login代码的实现

def user_login(request):
    if request.POST:
        username = password = ''
        username = request.POST.get('username')
        password = request.POST.get('password')
        user = authenticate(username=username, password=password)
        if user is not None and user.is_active:
            login(request, user)
            return redirect('/')
    else:
        context = {}
        return render(request, 'account/login.html', context)

这是register代码的实现　

def user_register(request):
    if request.method == "POST":
        register_form = UserForm(request.POST)
        if register_form.is_valid():
            username = register_form.cleaned_data['username']
            password = register_form.cleaned_data['password']
            email = register_form.cleaned_data['email']

            user = User.objects.create_user(username, email, password)
            user.save()

            login(request, authenticate(username=username, password=password))
            return redirect('/')
    else:
        register_form = UserForm()
        context = {'register_form': register_form}
        return render(request, 'account/register.html', context)

这是logout代码的实现

def user_logout(request):
    logout(request)
    return redirect('/')

一般在实际开发过程中会采用什么方法实现登录／注册／登出呢？