“AnonymousUser”对象不可迭代？Django

Question

我正在创建一个用户所有帖子的摘要页面，并将这些帖子返回到摘要页面。我会得到上面的错误吗？

它在抱怨这一行：

uploaded_aircraft = Aircraft.objects.filter(user=request.user)

查看

def aircraft_create(request):
  form = aircraft_form(request.POST or None)
  if form.is_valid():
    instance = form.save(commit=False)
    instance.user = request.user
    instance.save()
    messages.success(request, "Your upload has been successfully added!")
    return HttpResponseRedirect(instance.get_absolute_url())
  else:
    messages.error(request, "There seems to be something wrong. Have a look again..!")
  context = {"form":form,}
  return render(request,'aircraft/aircraft_form.html', context)

模型

class Aircraft(AircraftModelBase):
    user = models.ForeignKey(User)
    manufacturer = SortableForeignKey(Manufacturer)
    aircraft_type = SortableForeignKey(AircraftType)

查看

def account_overview(request):
    fav_aircraft = FavoritedAircraft.objects.filter(user__id=request.user.id)
    fav_airline = FavoritedAirline.objects.filter(user__id=request.user.id)

    uploaded_aircraft = Aircraft.objects.filter(user=request.user)

    return render(request,'account/account_overview.html', {'favAircraft':fav_aircraft,
                                                             'favAirline':fav_airline,
                                                             'UploadedAircraft':uploaded_aircraft})

回溯（Traceback）

Traceback (most recent call last):
  File "/home/csunix/scpython/lib/django/core/handlers/base.py", line 149, in get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/csunix/scpython/lib/django/core/handlers/base.py", line 147, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/cserv1_a/soc_ug/sc13nh/env/v10/accounts/views.py", line 57, in account_overview
    uploaded_aircraft = Aircraft.objects.filter(user=request.user)
  File "/home/csunix/scpython/lib/django/db/models/manager.py", line 122, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/home/csunix/scpython/lib/django/db/models/query.py", line 790, in filter
    return self._filter_or_exclude(False, *args, **kwargs)
  File "/home/csunix/scpython/lib/django/db/models/query.py", line 808, in _filter_or_exclude
    clone.query.add_q(Q(*args, **kwargs))
  File "/home/csunix/scpython/lib/django/db/models/sql/query.py", line 1243, in add_q
    clause, _ = self._add_q(q_object, self.used_aliases)
  File "/home/csunix/scpython/lib/django/db/models/sql/query.py", line 1269, in _add_q
    allow_joins=allow_joins, split_subq=split_subq,
  File "/home/csunix/scpython/lib/django/db/models/sql/query.py", line 1174, in build_filter
    self.check_related_objects(field, value, opts)
  File "/home/csunix/scpython/lib/django/db/models/sql/query.py", line 1073, in check_related_objects
    for v in value:
  File "/home/csunix/scpython/lib/django/utils/functional.py", line 205, in inner
    return func(self._wrapped, *args)
TypeError: 'AnonymousUser' object is not iterable

这里似乎是实际问题所在？

- Pakin Sife

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如果你遇到了错误，请在你的问题中包含完整的追踪回溯信息。 - Alasdair

@Alasdair 完成了！ - Pakin Sife

顺便提一下，在其他筛选器中，您不应该需要使用user__id=request.user.id，user=request.user应该可以正常工作（只要用户已登录）。 - Alasdair

Answer 1

错误提示你，request.user是匿名用户，也就是说他们没有登录，所以使用filter(user=request.user)筛选并不合理。

最简单的解决方法是使用login_required装饰器，确保只有已经登录的用户才能访问该视图。

from django.contrib.auth.decorators import login_required

@login_required
def account_overview(request):
    ...

- Alasdair

---

在我的模板中，我已经加入了 "{% if user.is_authenticated %} else "请登录" 这行代码，但是添加后页面返回一个 404 错误。我应该如何让 else 的部分生效？它应该放在视图函数还是模板中？ - Pakin Sife

现在在模板中进行检查已经太晚了——过滤器已经在视图中发生了。 login_required 装饰器会将未登录用户重定向到登录页面。如果您的 LOGIN_URL 设置和登录视图配置不正确，那么可能会出现 404 错误。如果您无法解决此问题，请提出一个新的问题。 - Alasdair

Answer 2

def account_overview(request):

 if request.user.is_authenticated:  # Notice this condition
    fav_aircraft = FavoritedAircraft.objects.filter(user__id=request.user.id)
    fav_airline = FavoritedAirline.objects.filter(user__id=request.user.id)

    uploaded_aircraft = Aircraft.objects.filter(user=request.user)
    return render(request,'account/account_overview.html', {'favAircraft':fav_aircraft,
                                                         'favAirline':fav_airline,
                                                         'UploadedAircraft':uploaded_aircraft})
   return render(request,'account/account_overview.html')

这应该能解决你的问题：用is_authenticated条件语句包装视图，只有在用户通过身份验证时才返回上下文。

- Alabi E. Oluwaferanmi

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现在我得到了 名称'request'未定义。 - AnonymousUser

添加 self.request.user.is_authenticated 解决了问题。 - AnonymousUser

Answer 3

虽然在您的情况下它不起作用(因为您使用方法而不是类)，但您可以通过LoginRequiredMixin解决这个问题:

from django.contrib.auth.mixins import LoginRequiredMixin

class MyView (LoginRequiredMixin, View):
     login_url = '/ login /'
     redirect_field_name = 'redirect_to'

- cr_hdz

Answer 4

我几分钟前遇到了这个问题，发现两种解决方法：

1. 在视图顶部实现 @login_required。这样，如果用户未经身份验证，将被重定向到登录页面。

2. 在视图函数的顶部编写 'if request.user.is_authenticated'。还应该在底部添加一个 else 块来呈现登录页面。

希望这对您有所帮助

- Joseph

Answer 5

我之前也遇到了同样的问题，通过注销然后重新登录解决了它。

目前来看，我认为这可能是一个简单的修复。

- Chowa C

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//Hello world program in Java public class HelloWorld { public static void main(String[] args) { System.out.println("Hello, World!"); } } - phoenixstudio