django更新模型

Question

我的模型如下

class UserPrivacy(models.Model):
    user = models.ForeignKey(User)
    profile = models.SmallIntegerField(default=1, choices=PRIVACY_TYPE)
    contact = models.SmallIntegerField(default=1, choices=PRIVACY_TYPE)
    friends = models.SmallIntegerField(default=1, choices=PRIVACY_TYPE)
    location = models.SmallIntegerField(default=1, choices=PRIVACY_TYPE)

我的模型如下

class PrivacyForm(ModelForm):
    class Meta:
        model = UserPrivacy
        exclude = ('user','location')

我的函数看起来像这样显示和更新表单.

def show_privacy(request):
    if not request.user.is_authenticated():
        return HttpResponseRedirect('/')

    if request.method == 'POST':
        form = PrivacyForm(request.POST, instance=User.objects.get(pk=request.session['id']))
        if form.is_valid():
            form.save()

    else:
        form = PrivacyForm()

    return render_to_response('settings_privacy.html', {'form': form}, context_instance=RequestContext(request))

我在db中的user_id是1 ..但是当我发布表单时,它永远不会更新.我知道form.save()因为在那里放一个打印而被调用,它会在开发服务器中显示出来.

Answer 1

Andy Hume对你的问题的评论是正确的.

您有一个基于UserPrivacy模型的ModelForm,但您正在向它传递一个User实例.

你想要做的是:

form = PrivacyForm(request.POST, instance=UserPrivacy.objects.get(user=request.user)