Django 模板检查用户已通过身份验证并且存在

Question

我正在创建用户登录并将 signin 的链接更改为 signout。

我的views.py是：

#This index is for my landing page i.e.first.html where I have Sigin link which needs to hidden on Successful
def index(request):
    if 'username' not in request.session :
        return render_to_response('gharnivas/ghar.html', context_instance=RequestContext(request))
    else:
    u = request.session['username']
    return render_to_response('gharnivas/ghar.html',{ 'user' : u },context_instance=RequestContext(request))


#This here, is the view for my check the user and create required
def ulogin(request):
    if request.method != 'POST':
        raise Http404('Only POSTs are allowed')
    try:
        m = Personal.objects.get(name__icontains=request.POST['username'])
        if m.password == request.POST['password']:
            request.session['username'] = m.id
            return HttpResponseRedirect('/')
    except Personal.DoesNotExist:
        return render_to_response('gharnivas/signin.html', {'error' : True }, context_instance=RequestContext(request))

urls.py 是：

urlpatterns = patterns('',
    url(r'^$', 'gharnivas.views.index'),#landing page
    url(r'^signin/$','gharnivas.views.signin'),#The view for sign In page
    url(r'^ulogin/$','gharnivas.views.ulogin'),#The view for creating a change in user login
}

然后在登陆页面，即 first.html 我有这个代码：

<table>
  <tr>
    <td>
    {% if user %}
            <div class="whitecolor"  >
                    &nbsp;&nbsp;<a href="">SignOut</a>&nbsp;&nbsp;&nbsp;</div>
    {% else %}
            <a href="/signin/">SignIn</a>&nbsp;&nbsp;&nbsp;
    {% endif %}
        </td>       
    <td><a href="/register/">Register</a>&nbsp;&nbsp;&nbsp;</td>
    <td><a href="/"> Home </a></td>
  </tr>
<table>

但是在输入的 url 上，我看不到 Sigin Link ，但我得到了 Signout。 当我将{% if user %} 更改为{% if not user %} 时，就会看到登录。

请告诉我哪里出错了

Answer 1

在我清除浏览器历史记录并添加SESSION_EXPIRE_AT_BROWSER_CLOSE = True后，错误不再存在 在 settings.py 中。在 syncdb 之后重新启动了 Django 服务器。 工作过

Answer 2

user 始终为真。您必须调用is_authenticated() 方法。

{% if user.is_authenticated %}