只能通过登录/注册访问主页

我的任务是仅在登录/注册操作后获取主页视图 . 例如，如果我们访问example.com，我们应该获得登录页面 . 如果我们之前没有注册，那么按下“登录”按钮（在输入任何用户名和密码后，因为我还没有完成注册按钮）必须在注册页面移动我们 .

这里的代码是：

views.py：

from django.shortcuts import render, redirect
from django.core.urlresolvers import reverse
from django.contrib.auth import authenticate, login
from django.contrib.auth.forms import AuthenticationForm, UserCreationForm

def my_login(request):
    if request.method == 'POST':
        form = AuthenticationForm(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:
                if user.is_active:
                    login(request, user)
                    return render(request, 'home.html', {})

                else:
                    # Return a 'disabled account' error message
                    pass
            else:
                # send to signup
                return render(request, 'signup.html', {})
    else:
        form = AuthenticationForm()
        return render(request, 'login.html', {'form': form})

这是我的login.html：

{% load staticfiles %}

{% if form.errors %}
<p>Your username and password didn't match. Please try again.</p>
{% endif %}

{% if next %}
    {% if user.is_authenticated %}
    <p>Your account doesn't have access to this page. To proceed,
    please login with an account that has access.</p>
    {% else %}
    <p>Please login to see this page.</p>
    {% endif %}
{% endif %}

<form method="post" action="{% url 'my_login' %}">
{% csrf_token %}
<table>
<tr>
    <td>{{ form.username.label_tag }}</td>
    <td>{{ form.username }}</td>
</tr>
<tr>
    <td>{{ form.password.label_tag }}</td>
    <td>{{ form.password }}</td>
</tr>
</table>

<input type="submit" value="Login" />
<input type="hidden" name="next" value="{{ next }}" />
</form>

目前显示错误（点击登录按钮后） -

/ error /上的ValueError视图evr.views.my_login未返回HttpResponse对象 . 它返回了None .

但重点不仅在于这个错误 . 我一般不明白我的方向是否合适？