Question

我有一个客户模型：

class Customer(models.Model):
    Name = models.TextField(blank=False)
    Surname = models.TextField(blank=False)
    PhoneNumber = models.TextField()
    Address = models.TextField()
    SendSms = models.BooleanField(default=True)
    SendEmail = models.BooleanField(default=True)
    Email = models.TextField()

    @classmethod
    def create(cls, name, surname, phoneNumber, address , sendSms, sendEmail, email):
        customer = cls(Name=name, Surname = surname, PhoneNumber = phoneNumber
                        , Address = address, SendSms = sendSms, SendEmail = sendEmail
                        , Email = email)
        return customer

引用this doc，这就是我如何创建新对象。

我有一个表单来创建新客户。像这样工作：

class NewCustomer(View):
    def get(self, request):
        c = {}
        c.update(csrf(request))
        return render_to_response("Customer/NewCustomer.html", c)

    def post(self, request):
        customer = Customer.create(request.POST.get("name", ""), request.POST.get("surname", ""),
                        request.POST.get("PhoneNumber", ""), request.POST.get("Address", ""),
                        request.POST.get("SendSms", ""), request.POST.get("SendEmail", ""),
                        request.POST.get("Email", ""))
        return HttpResponseRedirect("/Customers/",{"customerId":customer.id})

我有另一个视图女巫列出所有客户，但我在该视图中得到空数组。

def AllCustomers(request):
    return render_to_response("Customer/AllCustomers.html", {"customers": Customer.objects.all()})

有人能指出我在这里缺少什么来创造对象吗？

Answer 1

您需要致电save method以实际记录：

customer = cls(Name=name, Surname = surname, PhoneNumber = phoneNumber
               ,Address = address, SendSms = sendSms, SendEmail = sendEmail
               ,Email = email)
customer.save()
return customer

或需要使用Model.objects.create(..)：

customer = cls.objects.create(
               Name=name, Surname = surname, PhoneNumber = phoneNumber
               ,Address = address, SendSms = sendSms, SendEmail = sendEmail
               ,Email = email)
return customer

Answer 2

最好的选择是使用Django的ORM create method。但是，如果要覆盖此方法，请添加一些功能。您应该使用Manager

class CustomerManager(models.Manager):
    def create(self, **kwargs):
        super(CustomerManager, self).create(**kwargs)
        # Here it goes custom code

然后你应该参考Model

中的Manager

class Customer(models.Model):
    objects = CustomerManager()

    Name = models.TextField(blank=False)
    ...

无法创建django模型的新实例

2 个答案: