丹戈·曼尼托内?

我有一个库存管理应用程序,里面是一个 Item() 表示产品的类。所有设备都将被序列化,因此稍后将有一个类来表示调用的每个设备 OnHand() .

项目模型

class Item(models.Model):
    name = models.CharField(max_length=100)
    description = models.CharField(max_length=100)
    manufacturer = models.ForeignKey('Manufacturer', blank=True, null=True, on_delete=models.SET_NULL)
    introduction = models.DateField(auto_now=True)
    quanity = models.IntegerField(default=0)
    is_retired = models.BooleanField(default=False)
    tags = models.ManyToManyField(Tag)

    def __str__(self):
        return self.name

    def add(self):
        pass

    def remove(self):
        pass

    def retire(self): # Rex came up with this, roll credits.
        pass 

    def count(self):
        pass

我想要一个属性 一只手 那有 多对一 类型关系。

现有模型概念

class OnHand(models.Model):
    name = models.CharFiled(max_length=100)
    serial = models.CharField(max_length=80)
    asset = models.CharField(max_length=20)

    def __str__(self):
        return self.serial

创建新的 手头 对象,我想将其与 项目 . 我该怎么做呢?

结构示例

• 项目
  • 名称=MacBook Pro
  • 说明=15.5“MacBook Pro
  • 手头
    • 序列号,资产标签
    • 序列号,资产标签
    • 序列号,资产标签

当前测试代码

def make_macbook():
    """ Create a Manufacturer for Apple """
    apple = Manufacturer(name='Apple', rep_name='Jason Wilburn', support_number='1-800-Apple')
    apple.save()
    print('Manufacturer name: {}'.format(apple))

    """ Create a Category for Laptops """
    laptop = Category(name='Laptops')
    laptop.save()
    print('Category name: {}'.format(laptop))

    """ Create a Tag for Mac """
    mac = Tag(title='mac')
    mac.save()
    print('Tag name: {}'.format(mac))

    """ Create a MacBook Item """
    macbook = Item(name='Macbook Pro', description='15.5" Macbook Pro, 2018 Model', manufacturer=apple)
    macbook.save()
    print('Item name: {}'.format(macbook))

    """ Create a MacBook OnHand item """
    newMac = OnHand(name='MacBook Pro 15.5"', serial='SC02XP0NRJGH5', asset='DEPSC02XP0NRJGH5', product=macbook)
    newMac.save()

    """ Add to Item's OnHand """

现在,我主要是坚持增加 项目() 创建关系。