如何使用 Django Rest Framework 在单个请求中反序列化多个文件和表单数据？

Question

我想用一些基本表单数据+一个或多个上传的文件对表单进行反序列化。如果我发送以下请求（使用 Postman 作为 Python 请求代码生成）import requestsurl = "http://127.0.0.1:8000/forms/test/"payload = {'customer_id': '123456789','customer_name': 'Billy Bob'}files = [  ('files', open('/C:/tmp/aaaaa.csv','rb')),  ('files', open('/C:/tmp/bbbbb.csv','rb'))]headers= {}response = requests.request("POST", url, headers=headers, data = payload, files = files)print(response.text.encode('utf8'))该代码返回以下响应（我希望它会保存文件）。{    "files": [        "This field is required."    ]}楷模from datetime import datetimefrom django.db import modelsclass Mtfar(models.Model):    date = models.DateTimeField(auto_now_add=True)    customer_id = models.IntegerField()    customer_name = models.CharField(max_length=254)class MtfarFile(models.Model):    file = models.FileField(blank=False, null=False)    mtfar = models.ForeignKey(Mtfar, related_name='files', on_delete=models.CASCADE)序列化器from rest_framework import serializersfrom .models import Mtfar, MtfarFileclass MtfarFileSerializer(serializers.ModelSerializer):    class Meta:        model = MtfarFile        fields = ['file']class MtfarSerializer(serializers.ModelSerializer):    files = MtfarFileSerializer(many=True)    class Meta:        model = Mtfar        fields = ['customer_ptid', 'customer_name', 'files']

Answer 1

您需要将QueryDict对象转换为 adict以支持嵌套序列化，因为 DRFQueryDict以不同的方式解析 a 。

@api_view(['POST'])

@parser_classes([MultiPartParser])

def post_generic_form(request):

    dict_data = {

        **request.data.dict(),

        **{"files": [{"file": file} for file in request.FILES.getlist('files')]}

    }

    serializer = MtfarSerializer(data=dict_data)

    if serializer.is_valid():

        serializer.save()

        return Response(status=status.HTTP_201_CREATED)

    else:

        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)