关键点是：
产生FormSet内小号forms.py使用inlineformset_factory：
BookImageFormSet = inlineformset_factory(BookForm, BookImage, extra=2)
BookPageFormSet = inlineformset_factory(BookForm, BookPage, extra=5)
FormSet在的CreateView类中返回views.py：
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
用于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))
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