python - Django Rest Framework 上传文件到方法

Question

所以我一直在尝试将文件上传到使用 DRF 的方法，但到目前为止没有成功。

我能够使用 (FormParser, MultiPartParser,) 上传到 ModelViewSet 没有任何问题，但我真的需要在这样的地方使用它 http://localhost:8000/api/v1/women/{pk}/upload_avatar/ 我想先通过 id 过滤女人并上传到她的头像(这是多媒体模型的外键) .我尝试使用嵌套资源库，但没有成功。

到目前为止，我的模型 View 集中有:

class WomenNativePassportViewSet(viewsets.ModelViewSet):
    queryset = Women.objects.all()
    serializer_class = WomenNativePassportSerializer
    authentication_classes = (NoAuthentication,)
    permission_classes = (AllowAny,)
    parser_classes = (FormParser, MultiPartParser,)

    @detail_route(
        methods=['post', 'put', 'patch', 'get'], permission_classes=[AllowAny],
        authentication_classes=[NoAuthentication], serializer_class=MultimediaSerializer,
        parser_classes=(FormParser, MultiPartParser,)
    )
    def upload_avatar(self, request, pk=None, *args, **kwargs):
        if 'POST' in request._method or 'PATCH' in request._method:
            # Write code to save the file??
        else:
            multimedia = Multimedia.objects.filter(user_profiles_avatares__pk=pk)
            page = self.paginate_queryset(multimedia)
            serializer = self.get_pagination_serializer(page)
        return Response(serializer.data)

我的模型:

class Women(models.Model):
    user = models.OneToOneField(settings.AUTH_USER_MODEL)
    avatar = models.ForeignKey(
        'core.Multimedia', blank=True, null=True,
        related_name='user_profiles_avatares'
    )

class Multimedia(models.Model):
    file = models.FileField(upload_to=upload_to, null=True, blank=True)
    thumbnail = models.FileField(upload_to=upload_to, null=True, blank=True)

基本上我想知道这是否是我正在采取的正确路径，如果是，我如何才能在模型中正确保存上传的文件？

Answer 1

这是我为克服这个问题所做的一些代码。尽管 Kevin Brown 的回答可能有效，但我发现我的代码有点“简单”:

    @detail_route(
        methods=['post', 'put', 'patch', 'get'], permission_classes=[AllowAny],
        authentication_classes=[NoAuthentication], serializer_class=MultimediaSerializer,
        parser_classes=(FormParser, MultiPartParser,)
    )
    def upload_avatar(self, request, pk=None):
        # Because we are using nested resources this was the only way i found to
        # upload a file. Maybe there is a better way
        if request.method in ['PATCH', 'POST']:
            avatar = request.FILES.get('avatar')
            if not avatar:
                return Response(status=404)

            try:
                woman = WomenNativePassport.objects.get(pk=pk)
            except WomenNativePassport.DoesNotExist:
                return Response(status=404)
            else:
                request.FILES['thumbnail'] = request.FILES['avatar']
                serializer = AvatarSerializer(
                    data=request.DATA, files=request.FILES
                )
                if serializer.is_valid():
                    woman.avatar.thumbnail.save(str(avatar), File(avatar))
                    return Response(status=204)
                else:
                    return Response(status=404)
        else:
            multimedia = Multimedia.objects.filter(user_profiles_avatares__pk=pk)
            page = self.paginate_queryset(multimedia)
            serializer = self.get_pagination_serializer(page)
            return Response(serializer.data)


# serializer 

class AvatarSerializer(serializers.Serializer):
    thumbnail = serializers.ImageField()