Django 内联表单集设置

Question

我已经将我的课程设置如下：

class InspectionGroup(models.Model):
   group = models.CharField(max_length=50)

class InspectionItem(models.Model):
   group = models.ForeignKey(InspectionGroup)
   item = models.CharField(max_length=50)

class InspectionQuestion(models.Model):
   item = models.ForeignKey(InspectionItem)
   question = models.CharField(max_length=200)
   question_pass = models.BooleanField()

class InspectionResult(models.Model):
   question = models.ForeignKey(InspectionQuestion)
   vehicle = models.ForeignKey(Vehicle)
   result = models.BooleanField()
   submitted_by = models.ForeignKey(User, editable=False)
   date_time_submitted = models.DateTimeField(default=datetime.today,
                            editable=False)

我想做的是让用户选择一个检查组，然后从该组中向他们展示该组下的所有问题，其项目标题用于分组模板。然后他们将回答问题并发布结果。

我的问题是完成这件事。我已经开始编写一些代码，但它似乎不正确。

forms.py
QuestionFormSet = inlineformset_factory(InspectionItem, InspectionQuestion, 
            form=QuestionForm, extra=0, can_delete=False)
class BaseInspectionFormset(BaseInlineFormSet):
    def add_fields(self, form, index):
        # allow the super class to create the fields as usual
        super(BaseInspectionFormset, self).add_fields(form, index)

        # created the nested formset
        try:
            instance = self.get_queryset()[index]
            pk_value = instance.pk
        except IndexError:
            instance=None
        pk_value = hash(form.prefix)

        # store the formset in the .nested property
        form.nested = [QuestionFormSet (instance = instance, 
                        prefix = 'INSPECTIONQUESTIONS_%s' % pk_value)]
InspectionFormset = inlineformset_factory(InspectionGroup, InspectionItem, 
          formset=BaseInspectionFormset, extra=0, can_delete=False)


view.py
def vehicle_inspection(request, stock_number, id):
vehicle = get_object_or_404(Vehicle, stock_number=stock_number)
group = get_object_or_404(InspectionGroup, pk=id)

if request.method == 'POST':
    formset = InspectionFormset(request.POST, instance=group)

    if formset.is_valid():
        results = formset.save_all()

        return HttpResponseRedirect(reverse('inspectionRecord', 
                  kwargs={'stock_number': stock_number}))
else:
    formset = InspectionFormset(instance=group)


return render_to_response('vehicles-inspection-form.html', {
       'formset': formset})

有人可以确认这个想法是否可行或者我需要做什么才能拥有我想要的功能？目前我收到此错误：

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

更新 1 我已通过此链接成功解决了上述错误 来自 readthedocs

但是，目前，表单集似乎是空的，因为模板仅显示提交按钮。

<form action="." method="POST" id="inspection_form">
    {% csrf_token %}
    <div id="form">
        {{ formset.management_form }}
        {% for form in formset.forms %}
            {{ form }}
            {% if form.nested %}
                {% for formset in form.nested %}
                    {{ formset.as_table }}
                {% endfor %}
            {% endif %}
         {% endfor %}
     </div>
     <div class="form_buttons">
         <button type="submit" name="confirm" id="confirm">
             <span>Submit</span>
         </button>
     </div>
 </form>

现在可能出现什么问题？

Answer 1

该文档似乎有答案： https:// docs.djangoproject.com/en/dev/topics/forms/formsets/#understanding-the-managementform

编辑： for formset 而不是formset.forms？

和 {{ form.as_table }} 而不是 {{ form }}。