I already finish input and run all the GeoDjango code, it worked. But time after time my data got bigger and result in big size of GeoJSON. I used this code to read database from PostgreSQL (PostGIS) as GeoJSON and view it in Leaflet :
def testcrud_datasets(request): testcrud = serialize('geojson', Testcrud.objects.all()) return HttpResponse(testcrud, content_type='json')
Some solution I read suggest that I should use TopoJSON. How to get TopoJSON format from my PostgreSQL database since serialize does not support TopoJSON type?