具有内联模型表单或表单集的基于 Django 类的 View

Question

我有以下模型:

class Bill(models.Model):
    date = models.DateTimeField(_("Date of bill"),null=True,blank=True)

class Item(models.Model):
    name = models.CharField(_("Name"),max_length=100)
    price = models.FloatField(_("Price"))
    quantity = models.IntegerField(_("Quantity"))
    bill = models.ForeignKey("Bill",verbose_name=_("Bill"),
                             related_name="billitem")

我知道这是可能的:

from django.forms.models import inlineformset_factory
inlineformset_factory(Bill, Item)

然后通过标准 View 处理。

现在我想知道，是否有一种方法可以使用基于类的 View (不适用于管理员-界面)。

Answer 1

重点是:

1. 使用 inlineformset_factory 在 forms.py 中生成 FormSet:

   BookImageFormSet = inlineformset_factory(BookForm, BookImage, extra=2)
   BookPageFormSet = inlineformset_factory(BookForm, BookPage, extra=5)
   

2. 在 views.py 的 CreateView 类中返回了 FormSet:

   def get_context_data(self, **kwargs):
       context = super(BookCreateView, self).get_context_data(**kwargs)
       if self.request.POST:
           context['bookimage_form'] = BookImageFormSet(self.request.POST)
           context['bookpage_form'] = BookPageFormSet(self.request.POST)
       else:
           context['bookimage_form'] = BookImageFormSet()
           context['bookpage_form'] = BookPageFormSet()
       return context
   

3. 使用 form_valid 保存表单和表单集:

    def form_valid(self, form):
        context = self.get_context_data()
        bookimage_form = context['bookimage_formset']
        bookpage_form = context['bookpage_formset']
        if bookimage_form.is_valid() and bookpage_form.is_valid():
            self.object = form.save()
            bookimage_form.instance = self.object
            bookimage_form.save()
            bookpage_form.instance = self.object
            bookpage_form.save()
            return HttpResponseRedirect('thanks/')
        else:
            return self.render_to_response(self.get_context_data(form=form))