Python 如何在Django中为我的客户和订单模型创建ModelViewSet？

所以我有一个客户模型

class Customer(models.Model):
    first_name = models.CharField(max_length=50)
    last_name = models.CharField(max_length=50)
    email = models.EmailField()
    address = models.CharField(max_length=250)
    postal_code = models.CharField(max_length=20)
    city = models.CharField(max_length=100)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)

    class Meta:
        ordering = ('-created',)

和OrderItem模型

class OrderItem(models.Model):
    order = models.ForeignKey(Customer, on_delete=models.SET_DEFAULT, default=1)
    product = models.ForeignKey(Product, on_delete=models.SET_DEFAULT, default=1)
    quantity = models.PositiveIntegerField(default=1)
    ready = 1
    on_its_way = 2
    delivered = 3
    STATUS_CHOICES = (
        (ready, 'ready'),
        (on_its_way, 'on its way'),
        (delivered, 'delivered'),
    )
    status = models.SmallIntegerField(choices=STATUS_CHOICES)
    created = models.DateTimeField(auto_now_add=True)

    class Meta:
        ordering = ('-created',)

我按客户模型创建了另一个模型

class ByCustomer(models.Model):
    name = models.ForeignKey(Customer, on_delete=models.CASCADE)
    orders = models.ForeignKey(OrderItem, on_delete=models.CASCADE)

我想将其转换为ModelViewSet，其中仅显示所选客户的订单

class By_Customer_View(viewsets.ModelViewSet):
    # code let's you select only one customer
    # and returns all the Orders that customer has

我在@api\u视图中看到过类似的内容

 @api_view(['GET'])
 def by_customer(request, pk):
     tasks = ByCustomer.objects.get(name=pk)
     serializer = ByCustomerSerializer(tasks, many=False)
     return Response(serializer.data)

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这将如何与ModelViewSet一起工作？我无法在（viewsets.ModelViewSet，pk）上添加额外参数。我还应该添加哪些字段？我缺少哪些字段？ModelViewSets仍然是新手，所以我不知道它的局限性。如果ModelViewSet对此没有解决方案。我需要在上面的@api_视图代码中更改什么？谢谢。

重写modelviewset的

get\u queryset（）

方法。你是什么意思？用什么覆盖查询集？