Python 使用lz4+对POST和GET请求进行压缩和解压缩；django+；rest\u框架

我正在使用

django 1.11

+

rest\u框架

尝试使用

python

库实现无损压缩方法。简而言之，我实现了一个基于类的view

POST

方法，该方法定义了压缩方法。稍后，我希望在完成

GET

请求时实现一种解压缩方法。当我尝试发出

POST

请求时，我得到

typeerror

日志：

类字节对象是必需的，而不是'InMemoryUploadedFile'

我不太熟悉无损压缩的压缩，一些正确的方向会很好。最后，有没有其他方法可以在

POST

和

GET

方法上实现文件的压缩和解压缩

我的模型如下：

class EmployeeDocument(models.Model):
    """
    Model, Which holds Employee documents uploaded.

    """
    employee = models.ForeignKey(
        Employee, related_name="employee_docs", null=True, blank=True)
    document = models.FileField(
        upload_to='Images/', default='Images/None/No-img.jpg')
    details = models.TextField()
    # url = models.URLField(null=True)
    # path_to_image = models.CharField(null=True, max_length=100)
    # upload_date = models.DateTimeField(auto_now=True, db_index=True)

    def __str__(self):
        return 'DOC - %s' % (self.employee.user.username)

然后查看.py

class EmployeeDocumentPOST(APIView):
    """
      compress Document
    """
    permission_class = [AllowAny]
    serializer_class = EmployeeDocumentSerializer

    def compressed_doc(self,document):
        document = lz4.frame.compress(document)
        return document

    def post(self, request, *args, **kwargs):
        compressd_doc = self.compressed_doc(document)
        employee = Employee.objects.get(id=request.data.pop('employee'))
        detail = request.data.get('detail')
        employee_doc = EmployeeDocument.objects.create(**request.data)

        employee_doc.compressed_doc = compressed_doc
        employee_doc.employee = employee
        employee_doc.detail = detail
        employee_doc.save()

        serializer = EmployeeDocument(employee_doc)
        return Response(serializer.data, status = status, status = status.HTTP_200_OK)