--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/app/django/contrib/contenttypes/views.py Tue Oct 14 16:00:59 2008 +0000
@@ -0,0 +1,67 @@
+from django import http
+from django.contrib.contenttypes.models import ContentType
+from django.contrib.sites.models import Site
+from django.core.exceptions import ObjectDoesNotExist
+
+def shortcut(request, content_type_id, object_id):
+ "Redirect to an object's page based on a content-type ID and an object ID."
+ # Look up the object, making sure it's got a get_absolute_url() function.
+ try:
+ content_type = ContentType.objects.get(pk=content_type_id)
+ obj = content_type.get_object_for_this_type(pk=object_id)
+ except ObjectDoesNotExist:
+ raise http.Http404("Content type %s object %s doesn't exist" % (content_type_id, object_id))
+ try:
+ absurl = obj.get_absolute_url()
+ except AttributeError:
+ raise http.Http404("%s objects don't have get_absolute_url() methods" % content_type.name)
+
+ # Try to figure out the object's domain, so we can do a cross-site redirect
+ # if necessary.
+
+ # If the object actually defines a domain, we're done.
+ if absurl.startswith('http://') or absurl.startswith('https://'):
+ return http.HttpResponseRedirect(absurl)
+
+ # Otherwise, we need to introspect the object's relationships for a
+ # relation to the Site object
+ object_domain = None
+ opts = obj._meta
+
+ # First, look for an many-to-many relationship to Site.
+ for field in opts.many_to_many:
+ if field.rel.to is Site:
+ try:
+ # Caveat: In the case of multiple related Sites, this just
+ # selects the *first* one, which is arbitrary.
+ object_domain = getattr(obj, field.name).all()[0].domain
+ except IndexError:
+ pass
+ if object_domain is not None:
+ break
+
+ # Next, look for a many-to-one relationship to Site.
+ if object_domain is None:
+ for field in obj._meta.fields:
+ if field.rel and field.rel.to is Site:
+ try:
+ object_domain = getattr(obj, field.name).domain
+ except Site.DoesNotExist:
+ pass
+ if object_domain is not None:
+ break
+
+ # Fall back to the current site (if possible).
+ if object_domain is None:
+ try:
+ object_domain = Site.objects.get_current().domain
+ except Site.DoesNotExist:
+ pass
+
+ # If all that malarkey found an object domain, use it. Otherwise, fall back
+ # to whatever get_absolute_url() returned.
+ if object_domain is not None:
+ protocol = request.is_secure() and 'https' or 'http'
+ return http.HttpResponseRedirect('%s://%s%s' % (protocol, object_domain, absurl))
+ else:
+ return http.HttpResponseRedirect(absurl)