如何将外键绑定到对象？

Question

我有一个模型Order，

class Order(SmartModel): 
    date = models.DateTimeField(...) 
    status = models.IntegerField(...) 
    restaurant = models.ForeignKey(Restaurant,null=True,blank=True,default = None,help_text="The restaurant the customer order from") 
    email = models.EmailField(...) 
    mobile = PhoneNumberField(...) 

我现在的储蓄，像这样的对象，

orders = Order() 
    checkout_form = forms.CheckoutForm(request.POST,instance=orders) 
    orders = checkout_form.save(commit=False) 
    anon_user = User.objects.get(id=settings.ANONYMOUS_USER_ID) 
    orders.created_by = anon_user 
    orders.modified_by = anon_user 
    orders.status = Order.SUBMITTED 
    orders.save() 

正如你我可以看到我已经没救了餐厅（FK场），我应该如何去做那件事。我已经看过这个（https://groups.google.com/forum/?fromgroups=#!topic/django-users/PcSDKZhPVmc）和其他几个例子，但他们让我感到困惑。

我需要搭配〜餐厅〜订购，以便当我查找订单时，我知道它属于哪家餐厅。

恼人的事情是我没有加载djangoproject.com，它已经一周了。

forms.py，

class CheckoutForm(forms.ModelForm): 
    class Meta: 
     model = Order 
     exclude = ('created_by','modified_by','is_active','status','restaurant','date') 

模板，

<table> 
    {{ form.errors }} 
    {{ form.non_field_errors }} 
    {% form_table_row form.email %} 
    {% form_table_row form.mobile %} 
    </table> 

Answer 1

我想我会只是猜测这里或创建示例场景：

用户后创建信息并选择他们的餐厅。他们必须进入用户选择订单的下一个表单。餐厅ID必须通过下一个表单，以便当用户提交订单时，我们将使用该餐厅ID来保存订单。

def save_order(request, restaurant_id): 
    anon_user = User.objects.get(id=settings.ANONYMOUS_USER_ID) 
    orders = Order(restaurant_id=restaurant_id) 

    checkout_form = forms.CheckoutForm(request.POST, instance=orders) 
    checkout = checkout_form.save(commit=False) 

    checkout.created_by = anon_user 
    checkout.modified_by = anon_user 
    checkout.status = Order.SUBMITTED 
    checkout.save() 

Answer 2

在你看来，你需要得到Restaurant对象，并保存在order。由于您尚未显示完整的视图代码，因此我不确定如何获取Restaurant对象。

下面是示例代码...

orders = Order() 
checkout_form = forms.CheckoutForm(request.POST,instance=orders) 
orders = checkout_form.save(commit=False) 

#get restaurant obj 
restaurant = Restaurant.objects.get(name = "some_restaurant") 
orders.restaurant = restaurant 

anon_user = User.objects.get(id=settings.ANONYMOUS_USER_ID) 
orders.created_by = anon_user 
orders.modified_by = anon_user 
orders.status = Order.SUBMITTED 
orders.save()