我注意到当我将初始值传递给我的模型formset（第100-102行）时，我无法从第二个formset开始发布item的值。
无法理解我的意思是该字段的值没有出现在我的request.POST和我的formset没有保存，因为它是必填字段。
当我删除lines100-102并正常提交表单时，它可以正常工作。
这些线有什么问题？
查看
78 def registrant_details(request, event_slug, cart_id):
79 '''
80 Fill in user details for each item
81 '''
82 # check quantity between CartItem model and ItemUserDetails
83 event = get_object_or_404(Event, slug=event_slug)
84 cart = get_object_or_404(Cart, id=cart_id)
85 cart_items = CartItem.objects.filter(cart=cart)
86
87 max_num = [cart_item.quantity for cart_item in cart_items]
88
89 ItemUserDetailsFormset = modelformset_factory(ItemUserDetails, max_num=sum(max_num), extra=sum(max_num), exclude=['cart'])
90
91 if request.method == 'POST':
92 formset = ItemUserDetailsFormset(request.POST)
93 if formset.is_valid():
94 formset.save()
95 url = reverse('event_tickets_summary', args=[event_slug, cart_id])
96 return redirect(url)
97
98 else:
99 initial =[]
100 for item in cart_items:
101 for i in range(1, item.quantity+1):
102 initial.append({'item':item.item})
103 formset = ItemUserDetailsFormset(initial=initial)
104
105 template = 'payments/user_details.html'
106 template_vars = {'event':event,
107 'cart': cart,
108 'formset': formset}
109 return render(request, template, template_vars)