Question

我想创建一个表单，用户可以在其中选择模型对象，但是会根据用户过滤选择。然后，我想将该对象传递到html模板页面，以便可以在页面上显示对象字段。

我获得了可以正确显示对象的表单，因此get函数可以正常工作，但是当用户提交表单时，出现了一个属性错误，提示“ QueryDict对象没有属性'user'”。所以我假设我的post函数出了问题。

错误堆栈跟踪

File "/Users/wsm-app/env/lib/python3.7/site-packages/django/views/generic/base.py", line 97, in dispatch
    return handler(request, *args, **kwargs)
  File "/Users/wsm-app/polls/views.py", line 244, in post
    form = calendarForm(request=request.POST)
  File "/Users/wsm-app/polls/forms.py", line 25, in __init__
    user = request.user
AttributeError: 'QueryDict' object has no attribute 'user'

forms.py

class calendarForm(forms.Form):
    inputDate = forms.ModelChoiceField(label="Select a date", queryset = None, empty_label="No date selected")

    def __init__(self, *args, **kwargs):
        request = kwargs.pop('request', None)
        super().__init__(*args, **kwargs)
        if request:
            user = request.user
            self.fields['inputDate'].queryset = Analysis.objects.filter(user=user).order_by('sessionID__startDate')

views.py

class MultiView(generic.TemplateView):
    template_name = 'polls/analysis.html'

    def get(self,request):
        if self.request.user.is_authenticated:
            form = calendarForm(request=request)
            userid = self.request.user.id

            args = {'form': form,'obj':Analysis.objects.filter(user=userid).order_by('sessionID__startDate').last()}
        else:
            args = {'form': form}
        return render(request, self.template_name,args)


    def post(self,request):
        form = calendarForm(request=request.POST)
        if self.request.user.is_authenticated:
            if form.is_valid():
                obj = form.cleaned_data['inputDate']
                form = calendarForm(request=request)
                args = {'form':form,'obj':obj}
        else:
            form = calendarForm(request=request)
            args = {'form':form}
        return render(request, self.template_name, args)

Answer 1

用户位于请求对象内部，而不位于POST参数内部

def post(self,request):
    form = calendarForm(request=request)

通过request.POST.user而不是请求本身时，您将获得request.POST（通过request.user访问用户

如何在Django中处理ModelChoiceField表单的发布请求？属性错误？

1 个答案: