app/django/contrib/gis/shortcuts.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Sun, 08 Mar 2009 00:00:13 +0000
changeset 1731 254375a57d62
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Add json2.js to repository under json folder, update build script and app.yaml.template files. This is pretty useful set of functions for JSON manipulation in Javascript, we will mostly use stringify function. This code is on Public Domain license and comes from http://www.json.org/js.html. Patch by: Pawel Solyga Reviewed by: to-be-reviewed

import cStringIO, zipfile
from django.http import HttpResponse
from django.template import loader

def compress_kml(kml):
    "Returns compressed KMZ from the given KML string."
    kmz = cStringIO.StringIO()
    zf = zipfile.ZipFile(kmz, 'a', zipfile.ZIP_DEFLATED, False)
    zf.writestr('doc.kml', kml)
    zf.close()
    kmz.seek(0)
    return kmz.read()

def render_to_kml(*args, **kwargs):
    "Renders the response as KML (using the correct MIME type)."
    return HttpResponse(loader.render_to_string(*args, **kwargs),
                        mimetype='application/vnd.google-earth.kml+xml kml')

def render_to_kmz(*args, **kwargs):
    """
    Compresses the KML content and returns as KMZ (using the correct 
    MIME type).
    """
    return HttpResponse(compress_kml(loader.render_to_string(*args, **kwargs)),
                        mimetype='application/vnd.google-earth.kmz')


def render_to_text(*args, **kwargs):
    "Renders the response using the MIME type for plain text."
    return HttpResponse(loader.render_to_string(*args, **kwargs),
                        mimetype='text/plain')