django - 如何使用 DJango Rest Framework 上传多个图像？

Question

我可以使用以下代码上传单个图像。如果我选择多张图片，那么只会上传所选图片中的最后一张图片。
模型.py

class Image(models.Model):
property_id = models.ForeignKey(
                'properties.Address',
                null=False,
                default=1,
                on_delete=models.CASCADE
            )
image = models.ImageField(upload_to=directory_path)

序列化程序.py

class ImageSerializer(serializers.ModelSerializer):
class Meta:
    model = Image
    fields = (
        'property_id',
        'image'
    )

View .py

class ImageView(APIView):
parser_classes = (MultiPartParser, FormParser)

def get(self, request):
    all_images = Image.objects.all()
    serializer = ImageSerializer(all_images, many=True)
    return JsonResponse(serializer.data, safe=False)

def post(self, request, *args, **kwargs):
    file_serializer = ImageSerializer(data=request.data)
    if file_serializer.is_valid():
        file_serializer.save()
        return Response(file_serializer.data, status=status.HTTP_201_CREATED)
    else:
        return Response(file_serializer.errors, status=status.HTTP_400_BAD_REQUEST)

我对 Django 有点陌生。我想遍历我在 request.data 中收到的图像数组 谁能告诉我怎么做？

Answer 1

所以我终于以自己的方式找到了一个回到基础的解决方法，因为我没有找到任何方法以 DRF 方式做到这一点。我希望这个答案对 Django 社区有所帮助。我保持我的模型和序列化器相同，更改 View 以迭代每个图像并使用序列化器保存它。

View .py

class ImageView(APIView):
    parser_classes = (MultiPartParser, FormParser)

    def get(self, request):
        all_images = Image.objects.all()
        serializer = ImageSerializer(all_images, many=True)
        return JsonResponse(serializer.data, safe=False)

    def post(self, request, *args, **kwargs):
        property_id = request.data['property_id']

        # converts querydict to original dict
        images = dict((request.data).lists())['image']
        flag = 1
        arr = []
        for img_name in images:
            modified_data = modify_input_for_multiple_files(property_id,
                                                            img_name)
            file_serializer = ImageSerializer(data=modified_data)
            if file_serializer.is_valid():
                file_serializer.save()
                arr.append(file_serializer.data)
            else:
                flag = 0

        if flag == 1:
            return Response(arr, status=status.HTTP_201_CREATED)
        else:
            return Response(arr, status=status.HTTP_400_BAD_REQUEST)

helpers.py

def modify_input_for_multiple_files(property_id, image):
    dict = {}
    dict['property_id'] = property_id
    dict['image'] = image
    return dict

模型.py

class Image(models.Model):
    property_id = models.ForeignKey(
                    'properties.Address',
                    null=False,
                    default=1,
                    on_delete=models.CASCADE
                )
    image = models.ImageField(upload_to=directory_path)

serializers.py

class ImageSerializer(serializers.ModelSerializer):
    class Meta:
        model = Image
        fields = (
            'property_id',
            'image'
        )

请求以 querydict 的形式出现。线路 images = dict((request.data).lists())['image']将查询 dict 转换为 python dict，然后循环遍历 'image' 下的数组 key 。

postman 请求如下所示 :