如何在Django Rest框架中处理文件？

MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'

from django.db import models

class FileModel(models.Model):
    file = models.FileField(upload_to='files/')

from rest_framework import serializers
from .models import FileModel

class FileSerializer(serializers.ModelSerializer):
    class Meta:
        model = FileModel
        fields = '__all__'

from rest_framework.views import APIView
from rest_framework.parsers import MultiPartParser, FormParser
from rest_framework.response import Response
from .serializers import FileSerializer

class FileUploadView(APIView):
    parser_classes = (MultiPartParser, FormParser)

    def post(self, request, format=None):
        serializer = FileSerializer(data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=201)
        return Response(serializer.errors, status=400)

from django.urls import path
from .views import FileUploadView

urlpatterns = [
    path('file-upload/', FileUploadView.as_view()),
]