带有内联模型表单或表单集的基于 django 类的视图 [英] django class-based views with inline model-form or formset

问题描述

我有以下型号:

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)

然后通过标准视图进行处理.

and then process this via standard view.

现在我想知道，是否有一种方法可以使用基于类的视图(不适用于管理员界面).

Now I was wondering, if there is a way to achieve the same (meaning: using a inline for adding/editing items belonging to a bill) using class based views (not for the admin-interface).

推荐答案

要点是:

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)

返回views.py中CreateView类中的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

使用form_valid来保存表单和表单集:

 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))

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