While trying to upload the file using Postman with Content-Type - multipart/form-data in the headers. I am passing both the fields, but I get the following error:

Error:{"upload_to": ["This field is required."],"file_object": ["No
file was submitted."]}

urls.py

from django.conf.urls import include, url

from rest_framework_nested import routers

from utils.views import TemporaryImageView

from . import  views



router = routers.SimpleRouter(trailing_slash=False)



urlpatterns = [

    url(r'^', include(router.urls)),

    url(r'^upload-temp-image/$', TemporaryImageView.as_view())

]

views.py

from rest_framework import viewsets, filters

import django_filters.rest_framework

from rest_framework.generics import CreateAPIView

from rest_framework.parsers import FileUploadParser, MultiPartParser, FormParser

from utils.serializers.temporary_image import TemporaryImageSerializer



class TemporaryImageView(CreateAPIView):

    parser_classes = (MultiPartParser,)

    serializer_class = TemporaryImageSerializer

serializers.py

from rest_framework import serializers

from utils.models.tempfile import TemporaryFile



class TemporaryImageSerializer(serializers.ModelSerializer):

    choices = (('Company Logo','/company/logos/'),

               )

    upload_to = serializers.ChoiceField(choices=choices)

    file_object = serializers.ImageField()



    class Meta:

        model = TemporaryFile

        fields = ('upload_to', 'file_object')

models.py

from django.db import models

class TemporaryFile(models.Model):

    """

    a temporary file to backend

    """



    file_object = models.FileField(blank=False, null=False)

    timestamp = models.DateTimeField(auto_now_add=True)



    def __unicode__(self):

        return str(self.id)

Please help...I don't know what is wrong.

I have changed my models.py file in the way below and it works as expected..

models.py

from django.db import models

def get_image_path(instance, filename):

if instance.upload_to == "company_logo":

    path = 'company/logo/'

return path

class TemporaryFile(models.Model):
"""
a temporary file to backend
"""

file_object = models.FileField(blank=False, null=False, upload_to=get_image_path)

timestamp = models.DateTimeField(auto_now_add=True)



def __unicode__(self):

    return str(self.id)



def __init__(self, *args, **kwargs):

    self.upload_to = kwargs.pop("upload_to")

    super(TemporaryFile, self).__init__(*args, **kwargs)