Django的tastypie - 如何通过关系让多对多 [英] django-tastypie - How to make manytomany through relationship

问题描述

我工作的一个项目一个API和我有关系订单/产品通过这样的OrderProducts：

I'm working on a API for a project and I have a relationship Order/Products through OrderProducts like this:

在目录/ models.py

In catalog/models.py

class Product(models.Model):
    ...

为了/ models.py

In order/models.py

class Order(models.Model):
    products = models.ManyToManyField(Product, verbose_name='Products', through='OrderProducts')
    ...

class OrderProducts(models.Model):
    order = models.ForeignKey(Order)
    product = models.ForeignKey(Product)
    ...

现在，当我通过API加载顺序我想获得相关的产品一样，所以我想这（与Django的tastypie）：

Now, when I load an Order through the API I'd like to get the related Products as well, so I tried this (with django-tastypie):

为了/ api.py

In order/api.py

class OrderResource(ModelResource):
    products = fields.ToManyField('order.api.OrderProductsResource', products, full=True)

    class Meta:
        queryset = Order.objects.all()
        resource_name = 'order'

class OrderProductsRessource(ModelResource):
    order = fields.ToOneField(OrderResource, 'order')

    class Meta:
        queryset = OrderProducts.objects.all()
        resource_name = 'order/products'

这给我这个错误信息：'产品'对象有没有属性'秩序'。所以，我不知道什么是错或丢失，则可能需要我的产品资源的东西很好，但我试了几个办法都没有成功。任何帮助将受到欢迎：）

which give me this error message: "'Product' object has no attribute 'order'". So I'm not sure what's wrong or missing, it probably requires something in my Product resource as well but I tried several way without success. Any help would be welcome :)

推荐答案

现在的问题是这一行：

order = fields.ToOneField(OrderResource, 'order')

错误是pretty直线前进。 产品真的没有命名的属性订单。你的 OrderProduct 连接表呢，但你的M2M不会返回 OrderProduct 的IT返回产品秒。

The error is pretty straight-forward. Product really doesn't have an attribute named order. Your OrderProduct join table does, but your M2M doesn't return OrderProducts it returns Products.

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