Django形成ValidationError

Question

我在视图中有两个表单。一个htlm表单包括表单和formset，其他html表单只包含单个表单。

当我尝试提交单一形式（提醒）时，我收到此错误：

[u'ManagementForm data is missing or has been tampered with']

查看：

    form_class = CreateEventForm
    second_form_class = modelformset_factory(EventTime, form = EventTimeForm, extra=3, formset=EventTimeFormset)
    third_form_class = Reminder
    model = Event
    template_name = 'eventAdmin.html'
    def get_context_data(self, **kwargs):
            context = super(EventAdminPage, self).get_context_data(**kwargs)
            context['form'] = self.form_class(self.request.POST or None, prefix="form", instance = self.object)
            context['formset'] = self.second_form_class(
                self.request.POST or None,
                prefix="formset", 
                queryset=context['event_times'])
            context['reminder_form'] = Reminder(self.request.POST or None)
            return context

        def post(self, request, **kwargs):
            self.object = self.get_object()
            event_times = EventTime.objects.filter(event = self.object).exclude(start_time = None)
            if 'update_event_form' in request.POST:
                form_class = self.get_form_class()
                form = self.form_class(request.POST, prefix="form", instance=self.get_object())
                formset = self.second_form_class(request.POST, prefix="formset", queryset=event_times)
                if form.is_valid() and formset.is_valid():
                    event = form.save()
                    event_times = formset.save()
                    return HttpResponseRedirect('/event-admin-%s' %self.kwargs['event_id']) 
                else:
                    return self.render_to_response(
                        self.get_context_data(form=form, formset=formset))
            if 'reminder_form' in request.POST:
                form_class = self.second_form_class
                form_name = 'Reminder'
                form = form_class(request.POST)
                if form.is_valid():
                    form.save(commit=False)
                    message = form.cleaned_data.get('text')
                    return HttpResponseRedirect('/event-admin-%s' %self.kwargs['event_id']) 
                else:
                    return self.render_to_response(
                        self.get_context_data(form=form))

引发错误的表单的HTML：

<form method='POST' action=''><input type='hidden' name='csrfmiddlewaretoken' value='3uQyEn4m8bHpM7Jy6a8WKQz5A8Uf6RZF' />


<div id="div_id_text" class="form-group"> <label for="id_text" class="control-label  requiredField">
                Text<span class="asteriskField">*</span> </label> <div class="controls "> <textarea class="textarea form-control" cols="40" id="id_text" maxlength="500" name="text" rows="10">
</textarea> </div> </div>

            <input class="btn btn-primary" type="submit" name="reminder_form" value="Send" />
        </form> 

Answer 1

您需要在%// Change - preallocate X = zeros(size(img)); %// New - define spatial coordinates [x,y] = ndgrid(0:size(img,1)-1, 0:size(img,2)-1); for u=1:size(img,1) for v=1:size(img,2) %// Change a = 2*pi*(u-1)*x/size(img,1); b = 2*pi*(v-1)*y/size(img,2); temp = img.*(cos(a+b) + sin(a+b)); %// Change X(u,v) = sum(temp(:)); end end 之后添加此行{{ form.management_form }}。 Django使用它来管理formset中的表单。

<form method='POST' action=''>