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