在 django drf 的后台进程中上传文件（出现此错误：TemporaryUploadedFile 类型的对象不是 JSON 可序列化）

Question

这是我的创建功能：

    def create(self,request,*args,**kwargs):
    
        serializer = ArchiveSerializer( data = request.data, context = {"request":request} )
        serializer.is_valid(raise_exception=True)
        filename=serializer.validated_data.pop('file')
        serializer.save()
        id = serializer.validated_data.get("id")
        save_file_in_background.delay(id,filename)
        
        return Response(serializer.data, status=status.HTTP_201_CREATED)

这是tasks.py

from celery import shared_task
from django.core.files.base import ContentFile
from .models import Archive

@shared_task
def save_file_in_background(id,filename):
    try:
        archive = Archive.objects.get(pk=id)

        
        
        if filename:
            archive.file.save(filename, ContentFile(filename))
        

        archive.save()
        
    except Archive.DoesNotExist:
        pass  

但是当尝试添加对象并上传文件时出现此错误： TemporaryUploadedFile 类型的对象不可 JSON 序列化

除了在后台上传文件但出现此错误： “TemporaryUploadedFile 类型的对象不可 JSON 序列化”

Answer 1

您可以避免直接经过

TemporaryUploadedFile

1 - 在创建功能中临时保存文件：

def create(self, request, *args, **kwargs):
    serializer = ArchiveSerializer(data=request.data)
    serializer.is_valid(raise_exception=True)
    serializer.save()
    id = serializer.validated_data.get("id")
    
    file = serializer.validated_data.pop('file')
    file_path = f'/tmp/{file.name}'
    with open(file_path, 'wb+') as temp_file:
        for chunk in file.chunks():
            temp_file.write(chunk)

    save_file_in_background.delay(id, file_path)
    return Response(serializer.data, status=status.HTTP_201_CREATED)

2 - 更新 Celery 任务：

@shared_task
def save_file_in_background(id, file_path):
    try:
        archive = Archive.objects.get(pk=id)
        with open(file_path, 'rb') as file:
            archive.file.save(file_path.split('/')[-1], ContentFile(file.read()))
        archive.save()
    except Archive.DoesNotExist:
        pass