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