Python Django-保存新的table1.PK和table2.PK以及table2.FK

我基于django crispy表单创建了2个表单

Form1显示了OrderHeader

Form2显示了formset中的订单行

当我打开一个现有的OrderHeader时，我看到了标题和行，我可以很好地调整和保存打开的表单

当我打开空表单时，我在OrderHeader中选择一个客户，然后添加一些订单行，但在这里我无法保存，因为OrderLine没有OrderLine.OrderHeader的FK值

Q：当我点击提交时，如何在OrderLine.OrderHeader中保存OrderHeader.pk？

我的观点

def orderline_formset(request, id=None):
    if id:
        orderid = OrderHeader.objects.get(pk=id)
    else:
        orderid = OrderHeader()

    OrderLineFormSet = inlineformset_factory(OrderHeader, OrderLine, OrderLineForm, extra = 1, can_delete=True)  

    form = OrderHeaderForm(instance=orderid)
    formset = OrderLineFormSet(instance=orderid)
    helper = OrderLineFormSetHelper()

    if request.method == 'POST':
        OrderLine.orderheader = orderid
        formset = OrderLineFormSet(request.POST,instance=orderid)
        if formset.is_valid():
            formset.save()
            messages.success(request, 'Order saved succesfully!')
        else:
            messages.error(request, 'Order save error, please check fields below')
    else:
        formset = OrderLineFormSet(instance=orderid)

    return render_to_response("order.html", {'orderform' : form,'formset': formset, 'helper': helper},
                              context_instance=RequestContext(request))

我的表格.py

class OrderHeaderForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(OrderHeaderForm, self).__init__(*args, **kwargs)
        self.helper = FormHelper(self)
        self.helper.form_tag = False

    class Meta:
        model = OrderHeader


class OrderLineForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(OrderLineForm, self).__init__(*args, **kwargs)

    class Meta:
        model = OrderLine


class OrderLineFormSetHelper(FormHelper):
    def __init__(self, *args, **kwargs):
        super(OrderLineFormSetHelper, self).__init__(*args, **kwargs)
        self.form_method = 'post'
        self.template = 'bootstrap3/table_inline_formset.html'
        self.render_required_fields = True
        self.form_tag = False

---

错误是我只保存了表单集，而没有保存表单。因此，我将我的views.py更改为以下内容：

if request.method == 'POST':
    form = OrderHeaderForm(request.POST,instance=orderid)
    formset = OrderLineFormSet(request.POST,instance=orderid)
    if form.is_valid() and formset.is_valid():
        form.save()
        formset.save()
        messages.success(request, 'Order saved succesfully!')