Django的存储在S3中上传文件

问题描述

我有这个类，它暴露了POST端点的API消费者的使用Django的REST框架。

在code应该接收文件的上传，然后将其上传到S3。该文件被正确地上载到Django应用（ file_obj.length 返回实际文件大小），和在对象在S3创建的。然而，在S3中的文件大小为零。如果我登录的返回 file_obj.read（）为空为好。

什么是错的？

 从django.conf导入设置

从rest_framework.views进口APIView
从rest_framework.response进口回复
从rest_framework.parsers进口FileUploadParser
从boto.s3.connection进口S3Connection
从boto.s3.key导入密钥

从.models进口上传
从.serializers进口UploadSerializer


类UploadList（APIView）：
    parser_classes =（FileUploadParser，）

    高清后期（个体经营，要求，形式=无）：
        file_obj = request.FILES ['文件']

        上传=上传（用户= request.user，文件= file_obj）
        upload.save（）

        康恩= S3Connection（settings.AWS_ACCESS_KEY，settings.AWS_SECRET_KEY）
        K =密钥（conn.get_bucket（settings.AWS_S3_BUCKET））
        k.key ='upls /％S /％s.png'％（request.user.id，upload.key）
        k.set_contents_from_string（file_obj.read（））

        串行= UploadSerializer（上传）

        返回响应（serializer.data，状态= 201）
 

解决方案

难道事情是读取文件对象已经，保存方法，也许你的上传类，你需要寻求回到起点？

  file_obj.seek（0）
 

I have this class that exposes a POST endpoint to an API consumer using Django REST framework.

The code is supposed to receive a file upload, and then upload it to S3. The file is uploaded correctly to the Django app (file_obj.length returns the actual file size), and the object is created in S3. However, the file size in S3 is zero. If I log the return of file_obj.read() it is empty as well.

What is wrong?

from django.conf import settings

from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.parsers import FileUploadParser
from boto.s3.connection import S3Connection
from boto.s3.key import Key

from .models import Upload
from .serializers import UploadSerializer


class UploadList(APIView):
    parser_classes = (FileUploadParser,)

    def post(self, request, format=None):
        file_obj = request.FILES['file']

        upload = Upload(user=request.user, file=file_obj)
        upload.save()

        conn = S3Connection(settings.AWS_ACCESS_KEY, settings.AWS_SECRET_KEY)
        k = Key(conn.get_bucket(settings.AWS_S3_BUCKET))
        k.key = 'upls/%s/%s.png' % (request.user.id, upload.key)
        k.set_contents_from_string(file_obj.read())

        serializer = UploadSerializer(upload)

        return Response(serializer.data, status=201)

解决方案

Is it possible that something is reading the file object already, perhaps your Upload class save method, and you need to seek back to the beginning?

file_obj.seek(0)

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