class ProductCreateSerializer(serializers.ModelSerializer):
    class Meta:
         model = Product
        fields = [
            "id",
            "product_name",
            "product_description",
            "product_price",
          ]
    def create(self,validated_data):
         return Product.objects.create(**validated_data)

from rest_framework  import generics,status
from rest_framework.parsers import FormParser,MultiPartParser

class ProductCreateAPIView(generics.CreateAPIView):
    queryset = Product.objects.all()
    serializer_class = ProductCreateSerializer
    permission_classes = [IsAdminOrIsSelf,]
    parser_classes = (MultiPartParser,FormParser,)

    def perform_create(self,serializer,format=None):
        owner = self.request.user
        if self.request.data.get('image') is not None:
            product_image = self.request.data.get('image')
            serializer.save(owner=owner,product_image=product_image)
        else:
            serializer.save(owner=owner)

def test_product_creation_with_image(self):
    url = reverse('products_create_api')
    self.client.login(username='testaccount',password='testaccount')
    data = {
        "product_name" : "Potatoes",
        "product_description" : "Amazing Potatoes",
        "image" : open("local-filename.jpg","rb")
    }
    response = self.client.post(url,data)
    self.assertEqual(response.status_code,status.HTTP_201_CREATED)

'DEFAULT_PARSER_CLASSES': (
    'rest_framework.parsers.JSONParser',
    'rest_framework.parsers.MultiPartParser',
    'rest_framework.parsers.FileUploadParser',
),

file = serializers.FileField()

parser_classes = (FileUploadParser, JSONParser)

# views.py
class FileUploadView(views.APIView):
    parser_classes = (MultiPartParser,)

    def put(self, request, filename, format=None):
        file_obj = request.data['file'][0]
        ftype    = request.data['ftype'][0]
        caption  = request.data['caption'][0]
        # ...
        # do some stuff with uploaded file
        # ...
        return Response(status=204)

file.upload = Upload.upload({
  url: "/api/picture/upload/" + file.name,
  data: {
    file: file,
    ftype: 'final',
    caption: 'This is an image caption'
  }
});