/django/contrib/gis/sitemaps/views.py
Python | 111 lines | 83 code | 8 blank | 20 comment | 24 complexity | 27fec0bedcc735dfb506a989e2125d62 MD5 | raw file
Possible License(s): BSD-3-Clause
- from django.http import HttpResponse, Http404
- from django.template import loader
- from django.contrib.sites.models import get_current_site
- from django.core import urlresolvers
- from django.core.paginator import EmptyPage, PageNotAnInteger
- from django.contrib.gis.db.models.fields import GeometryField
- from django.db import connections, DEFAULT_DB_ALIAS
- from django.db.models import get_model
- from django.utils.encoding import smart_str
- from django.contrib.gis.shortcuts import render_to_kml, render_to_kmz
- def index(request, sitemaps):
- """
- This view generates a sitemap index that uses the proper view
- for resolving geographic section sitemap URLs.
- """
- current_site = get_current_site(request)
- sites = []
- protocol = request.is_secure() and 'https' or 'http'
- for section, site in sitemaps.items():
- if callable(site):
- pages = site().paginator.num_pages
- else:
- pages = site.paginator.num_pages
- sitemap_url = urlresolvers.reverse('django.contrib.gis.sitemaps.views.sitemap', kwargs={'section': section})
- sites.append('%s://%s%s' % (protocol, current_site.domain, sitemap_url))
- if pages > 1:
- for page in range(2, pages+1):
- sites.append('%s://%s%s?p=%s' % (protocol, current_site.domain, sitemap_url, page))
- xml = loader.render_to_string('sitemap_index.xml', {'sitemaps': sites})
- return HttpResponse(xml, mimetype='application/xml')
- def sitemap(request, sitemaps, section=None):
- """
- This view generates a sitemap with additional geographic
- elements defined by Google.
- """
- maps, urls = [], []
- if section is not None:
- if section not in sitemaps:
- raise Http404("No sitemap available for section: %r" % section)
- maps.append(sitemaps[section])
- else:
- maps = sitemaps.values()
- page = request.GET.get("p", 1)
- current_site = get_current_site(request)
- for site in maps:
- try:
- if callable(site):
- urls.extend(site().get_urls(page=page, site=current_site))
- else:
- urls.extend(site.get_urls(page=page, site=current_site))
- except EmptyPage:
- raise Http404("Page %s empty" % page)
- except PageNotAnInteger:
- raise Http404("No page '%s'" % page)
- xml = smart_str(loader.render_to_string('gis/sitemaps/geo_sitemap.xml', {'urlset': urls}))
- return HttpResponse(xml, mimetype='application/xml')
- def kml(request, label, model, field_name=None, compress=False, using=DEFAULT_DB_ALIAS):
- """
- This view generates KML for the given app label, model, and field name.
- The model's default manager must be GeoManager, and the field name
- must be that of a geographic field.
- """
- placemarks = []
- klass = get_model(label, model)
- if not klass:
- raise Http404('You must supply a valid app label and module name. Got "%s.%s"' % (label, model))
- if field_name:
- try:
- info = klass._meta.get_field_by_name(field_name)
- if not isinstance(info[0], GeometryField):
- raise Exception
- except:
- raise Http404('Invalid geometry field.')
- connection = connections[using]
- if connection.ops.postgis:
- # PostGIS will take care of transformation.
- placemarks = klass._default_manager.using(using).kml(field_name=field_name)
- else:
- # There's no KML method on Oracle or MySQL, so we use the `kml`
- # attribute of the lazy geometry instead.
- placemarks = []
- if connection.ops.oracle:
- qs = klass._default_manager.using(using).transform(4326, field_name=field_name)
- else:
- qs = klass._default_manager.using(using).all()
- for mod in qs:
- mod.kml = getattr(mod, field_name).kml
- placemarks.append(mod)
- # Getting the render function and rendering to the correct.
- if compress:
- render = render_to_kmz
- else:
- render = render_to_kml
- return render('gis/kml/placemarks.kml', {'places' : placemarks})
- def kmz(request, label, model, field_name=None, using=DEFAULT_DB_ALIAS):
- """
- This view returns KMZ for the given app label, model, and field name.
- """
- return kml(request, label, model, field_name, compress=True, using=using)