基于字段值的Django过滤

Question

我正在使用Django,我想在其中使用过滤器

我的产品和公司型号是

class Product(models.Model):
    name = models.CharField(max_length=200)
    companyId = models.ForeignKey(Comapany)

class Company(models.Model):
    domain = models.CharField(max_length=200)

我想根据当前用户的companyId检索产品.所以我已经像这样实现了我的观点..

class ListProducts(APIView):
    authentication_classes = (authentication.TokenAuthentication,)
    permission_classes = (permissions.IsAdminUser,)

def get(self, request):
        if request.user.is_authenticated():
            userCompanyId = request.user.get_profile().companyId
        products = Product.objects.filter(companyId__id__exact = userCompanyId)
        serializer = ProductSerializer(products)
        return Response(serializer.data)

我的产品数据

{
   "_id": ObjectId("5284ceaae9cfff79368e1f29"),
   "companyId": "528458c4bbe7823947b6d2a3",
   "name": "Apple Juice" 
}
{
   "_id": ObjectId("5267bb4ebbe78220588b4567"),
   "companyId": "52674f02bbe782d5528b4567",
   "name": "Small Soft & Moist Cranberry" 
}

我的公司数据

{
   "_id": ObjectId("528458c4bbe7823947b6d2a3"),
   "domain": "Manufacturing" 
}
{
   "_id": ObjectId("52674f02bbe782d5528b4567"),
   "domain": "Manufacturing" 
}

我得到输出为 []

问题是,在研究django doc的过滤器时,我无法得到它...所以请帮帮我..

Answer 1

我解决了这个错误.实际上指定Product model的companyId引用Id公司模型字段的方式是错误的.所以我看到了如何userprofile参考user模型.我在这里提到我的变化.

产品型号

class Product(models.Model):
    name = models.CharField(max_length=200)
    company = models.ForeignKey(Company,null=True)

视图

class ListProducts(APIView):
    authentication_classes = (authentication.TokenAuthentication,)
    permission_classes = (permissions.IsAdminUser,)
    model = Product

    def get(self, request):
        if request.user.is_authenticated():
            userCompanyId = request.user.get_profile().companyId
        products = Product.objects.filter(company = userCompanyId)
        serializer = ProductSerializer(products,many=True)
        return Response(serializer.data)

把company_id放在像这样的公司数据中

{
   "_id": ObjectId("5284ceaae9cfff79368e1f29"),
   "company_id": "528458c4bbe7823947b6d2a3",
   "name": "Apple Juice" 
}