当我发布文件数据时，它包含空值

Question

def image_saving_product(instance, filename):
    return '/'.join( ['product', str(instance.id), filename] )

models.py

class Image(models.Model):
   image_file = models.ImageField(blank=True,upload_to=image_saving_product,null=False)
   product = models.ForeignKey(ProductInfo,on_delete=models.PROTECT,default=None, blank=False)
   def __str__(self):
       return f'image id is {self.id} & this image is for {self.product.id},s product'
   def __unicode__(self):
       return f'image id is {self.id} & this image is for {self.product.id},s product'

序列化器.py

class ImageSerializer(serializers.ModelSerializer):

class Meta:
    model = Image
    fields = '__all__'

views.py

class ProductImageViewSet(viewsets.ModelViewSet):
   authentication_classes = [TokenAuthentication]
   permission_classes = [IsAdminUser]
   queryset = Image.objects.all()
   serializer_class = ImageSerializer

这是我的代码，当我想发布图片时我可以发送发布请求，但它的值为空.. 如果您能回答我的问题，我将不胜感激。

Answer 1

您发送 Image 而不是 image_file 所以在 postman 中更改它并且可以正常工作。