Question

我尝试使用DRF和jQuery构建文件上传。我用Google搜索并找到了this sample。我在beckand上有一些类似的代码：

class Attachment(BaseModel):
      file = models.FileField(upload_to=get_photo_path)


class AttachmentSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.Attachment
        fields = ('id', 'file')

class AttachmentViewSet(viewsets.ModelViewSet):
    parser_classes = (FileUploadParser, )
    serializer_class = serializers.AttachmentSerializer
    queryset = models.Attachment.objects.all()

    def pre_save(self, obj):
        obj.file = self.request.FILES.get('file')

并尝试将Angular示例转换为jQuery

  var fd = new FormData()
  fd.append('file', file) // file from file-field
  var reader = new FileReader()
  $.ajax({
      url: 'http://localhost:8001/files/',
      data: fd,
      processData: false,
      contentType: false,
      type: 'POST'
  }).done(...

由于某些原因，我在尝试上传文件时后端出错：

detail: "FileUpload parse error - none of upload handlers can handle the stream"

Answer 1

实际上问题是一种解析器。我应该使用(FormParser, MultiPartParser, )代替(FileUploadParser, )

Answer 2

默认的Django上传处理程序是：

["django.core.files.uploadhandler.MemoryFileUploadHandler", "django.core.files.uploadhandler.TemporaryFileUploadHandler"]

默认情况下，应用设置文件中没有FILE_UPLOAD_HANDLERS参数。

在我的情况下，我已经排除了MemoryFileUploadHandler并设置了

FILE_UPLOAD_HANDLERS = ["django.core.files.uploadhandler.TemporaryFileUploadHandler", ]

在应用设置文件中，它解决了问题。

Django Rest框架和文件上传

2 个答案: