philo/views.py

   1 from django.conf import settings
   2 from django.core.urlresolvers import resolve
   3 from django.http import Http404, HttpResponseRedirect
   4 from django.views.decorators.vary import vary_on_headers
   5 from philo.exceptions import MIDDLEWARE_NOT_CONFIGURED
   6
   7
   8 @vary_on_headers('Accept')
   9 def node_view(request, path=None, **kwargs):
  10         if "philo.middleware.RequestNodeMiddleware" not in settings.MIDDLEWARE_CLASSES:
  11                 raise MIDDLEWARE_NOT_CONFIGURED
  12
  13         if not request.node:
  14                 if settings.APPEND_SLASH and request.path != "/":
  15                         path = request.path
  16
  17                         if path[-1] == "/":
  18                                 path = path[:-1]
  19                         else:
  20                                 path += "/"
  21
  22                         view, args, kwargs = resolve(path)
  23                         if view != node_view:
  24                                 return HttpResponseRedirect(path)
  25                 raise Http404
  26
  27         node = request.node
  28         subpath = request.node.subpath
  29
  30         # Explicitly disallow trailing slashes if we are otherwise at a node's url.
  31         if request._cached_node_path != "/" and request._cached_node_path[-1] == "/" and subpath == "/":
  32                 return HttpResponseRedirect(node.get_absolute_url())
  33
  34         if not node.handles_subpath(subpath):
  35                 # If the subpath isn't handled, check settings.APPEND_SLASH. If
  36                 # it's True, try to correct the subpath.
  37                 if not settings.APPEND_SLASH:
  38                         raise Http404
  39
  40                 if subpath[-1] == "/":
  41                         subpath = subpath[:-1]
  42                 else:
  43                         subpath += "/"
  44
  45                 redirect_url = node.construct_url(subpath)
  46
  47                 if node.handles_subpath(subpath):
  48                         return HttpResponseRedirect(redirect_url)
  49
  50                 # Perhaps there is a non-philo view at this address. Can we
  51                 # resolve *something* there besides node_view? If not,
  52                 # raise a 404.
  53                 view, args, kwargs = resolve(redirect_url)
  54
  55                 if view == node_view:
  56                         raise Http404
  57                 else:
  58                         return HttpResponseRedirect(redirect_url)
  59
  60         return node.render_to_response(request, kwargs)