import zipfile from io import BytesIO from django.conf import settings from django.http import HttpResponse from django.template import loader # NumPy supported? try: import numpy except ImportError: numpy = False def compress_kml(kml): "Return compressed KMZ from the given KML string." kmz = BytesIO() with zipfile.ZipFile(kmz, "a", zipfile.ZIP_DEFLATED) as zf: zf.writestr("doc.kml", kml.encode(settings.DEFAULT_CHARSET)) kmz.seek(0) return kmz.read() def render_to_kml(*args, **kwargs): "Render the response as KML (using the correct MIME type)." return HttpResponse( loader.render_to_string(*args, **kwargs), content_type="application/vnd.google-earth.kml+xml", ) def render_to_kmz(*args, **kwargs): """ Compress the KML content and return as KMZ (using the correct MIME type). """ return HttpResponse( compress_kml(loader.render_to_string(*args, **kwargs)), content_type="application/vnd.google-earth.kmz", )