upload multiple image and associate to property

I am using django rest framework for rest api. I am trying to work on mutiple image upload and associate those multiple images to property. However my browsable api does not show form to upload the images so i can test if my code works or not. How can i upload multiple image and associate them to property?

class Property(models.Model):
  owner = models.ForeignKey(settings.AUTH_USER_MODEL)
  address = models.CharField(_('Address'), max_length=140)
  rooms = models.PositiveSmallIntegerField(_('Rooms'))

class Gallery(models.Model):
    property = models.ForeignKey(Property, related_name="gallery")
    caption = models.CharField(null=True, blank=True, max_length=80)
    image = models.ImageField(upload_to="properties/rooms/")

class GallerySerializer(serializers.ModelSerializer):
    class Meta:
        model = Gallery
        fields=('id', 'caption', 'image', )

class PropertySerializer(serializers.ModelSerializer, EagerLoadingMixin):
    _SELECT_RELATED_FIELDS = ['owner', ]
    _PREFETCH_RELATED_FIELDS = ['property_type',]
    gallery = GallerySerializer(many=True)


class PropertyGallery(APIView):
    serializer_class = GallerySerializer
    parser_classes = (FileUploadParser,)
    def put(self, request, property_id=None, format=None):
        serializer = self.serializer_class(data=request.data, partial=True)
        if not serializer.is_valid():
            return Response(serializer.errors, status= status.HTTP_400_BAD_REQUEST)
        else:
            serializer.save()
            return Response(serializer.data, status=status.HTTP_200_OK)

url(r'^upload/images/(?P<property_id>[0-9]*)/$', views.PropertyGallery.as_view(), name='property-gallery'),