如何在循环Django中分配外键

Posted 2023-02-24

【中文标题】如何在循环Django中分配外键

【英文标题】：How to assign Foreign key inside loop Django

【发布时间】：2022-01-17 11:41:20

【问题描述】：

我想为循环中的每种颜色分配一个外键

colorArray=[color:'red', product_id:5, color:'yellow', product_id:5]

产品型号

class Product(models.Model):
    name = models.CharField(max_length=500)
    brand = models.CharField(max_length=500)
    description = models.CharField(max_length=500)

颜色模型

class Color(models.Model):
    colorName = models.CharField(max_length=500)
    product_id = models.ForeignKey(Product, on_delete=models.CASCADE)

观看次数

class AddColors(APIView):
    def post(self,request):
        for i in colorArray:
            s=AddColors()
            s.colorName=i['color']
            s.product_id=i[Product.objects.get(id=i['product_id'])]
            s.save()
        return Response('colors Saved')

【参考方案1】：

在你看来你做错了：

class AddColors(APIView):
    def post(self,request):
        for i in colorArray:
            s = AddColors() # This is not correct
            s = Color() # Your model class is Color not AddColors
            s.colorName = i['color']

            # This is also incorrect: 
            s.product_id = i[Product.objects.get(id=i['product_id'])]

            # It should be like this:
            s.product_id = Product.objects.get(id=i['product_id'])

            s.save()
        return Response('colors Saved')