Question

我想在我的API中使用现有的models.py过滤类方法。问题是我想避免两次编写相同的逻辑，并希望在模型中保留逻辑（而不是在API中）。这就是我现在所做的：

在models.py中：

class Deal(models.Model):
    # some attributes

    @classmethod
    def get_filtered_deals(cls, client, owner):
        return cls.objects.filter(... # complex filtering rules here, I want to keep this logic here, not duplicate it in api.py!!!

但是我被卡住了，因为我不知道如何在Tastypie中的Deal关联资源中调用get_filtered_deals（）类方法。我试过这样的事情：

class Deals(ModelResource):

    class Meta(CommonResourceMeta):
        queryset = Deal.objects.all()
        resource_name = "deals"
        list_allowed_methods = ['get']
        authorization = DealAuthorization()

class DealAuthorization(Authorization):
    def read_list(self, object_list, bundle):
        return object_list.get_filtered_deals(
            owner=bundle.request.user,
            client=int(request.GET['arg2']))

这显然不起作用，因为object_list没有名为get_filtered_deals

的方法

感谢您的帮助！

Answer 1

这很简单......

class DealAuthorization(Authorization):
    def read_list(self, object_list, bundle):
        object_list = Deal.get_filtered_deals(
            owner=bundle.request.user,
            client=int(request.GET['arg2']))

        return object_list

在Tastypie中，如何在资源中调用Django classmethod？

1 个答案: