Image upload via webservice Django/ionic

models.py

def get_resultfile_upload_destination(instance, filename):
    return "complaint/00_generic/farmerid_{farmerid}/{file}".format(farmerid=instance.farmer.id, file=filename)


class Complaint(models.Model):
    farmer = models.ForeignKey(Farmer)
    file = models.FileField(blank=True, default='', upload_to=get_resultfile_upload_destination)
    text = models.TextField(blank=True, default='')
    timestamp = models.DateTimeField(auto_now=True)

serializer.py

class ComplaintSerializer(serializers.ModelSerializer):

    class Meta:
        model = Complaint
        fields = ('farmer', 'file', 'text')
 

urls.py

        url(r'^webservice/register/complaint/$', 'instance.views.register_generic_complaint_via_webservice'),

  
  
  
  // url => http://localhost:8000/instance/webservice/register/complaint/
  // curl upload test
  //      curl -i -X PUT -S  -u "username:password" -F "file=@/Users/gramasamy/Desktop/Mythili_newspaper.jpeg" -F "farmer=6" localhost:8000/instance/webservice/register/complaint/

views.py

@api_view(['GET', 'PUT'])
def register_generic_complaint_via_webservice(request):
    """
    Record the generic complaint coming from mobile applications.
    :param request:
    :return: success
    """

    # do the operations
    if request.method == "PUT":
        serializer = ComplaintSerializer(data=request.data)
        print serializer
        if serializer.is_valid():
            print "serializer is valid"
            serializer.save()
            return Response(status=status.HTTP_201_CREATED)
        else:
            print "serializer is NOT valid"
            print serializer.error_messages
            print serializer.error
            print serializer.data
            return Response(serializer.errors, status=status.HTTP_204_NO_CONTENT)

    elif request.method == 'GET':
        serializer = ComplaintSerializer(Complaint.objects.all()[0])
        return Response(serializer.data)