+# End of.
+
+from floof.lib import file_storage as storage
+
+def get_object_or_404(model, **kw):
+ from pylons.controllers.util import abort
+ """
+ Returns object, or raises a 404 Not Found is object is not in db.
+ Uses elixir-specific `get_by()` convenience function (see elixir source:
+ http://elixir.ematia.de/trac/browser/elixir/trunk/elixir/entity.py#L1082)
+ Example: user = get_object_or_404(model.User, id = 1)
+ """
+ obj = model.get_by(**kw)
+ if obj is None:
+ abort(404)
+ return obj
+
+def get_comment_owner_url(**route):
+ """Given a view route, returns the owner_url route parameter for generating
+ comment URLs.
+ """
+ if 'owner_url' in route:
+ # We're already in a comments page. Reuse the existing owner URL
+ return route['owner_url']
+
+ # url() returns URLs beginning with a slash. We just need to strip it.
+ return url(**route)[1:]
+
+def storage_url(prefix, identifier):
+ """Returns a URL for the given object-in-storage."""
+ return storage.get_path(prefix, identifier)