def process_view(self, request, view_func, view_args, view_kwargs):
'''Validates a request before it calls the appropriate processing
method in the node.'''
try:
node_cls = view_func.im_self
request = HttpRequest(request)
if not len(node_cls.get_allowed_methods(implicits=False)):
raise Http404
if request.method not in node_cls.get_allowed_methods():
raise MethodNotAllowedError(node_cls)
if request.method != 'OPTIONS':
if not len(get_matching_mime_types(request, node_cls)):
raise NotAcceptableError(node_cls)
except (HttpError), http_exception:
return self.process_exception(request, http_exception)
def __init__(self, request, *args, **kwargs):
'''Initializes a new instance of the Node class:
- request: Current HttpRequest instance.
- *args, **kwargs are passed all the way to the top parent node.'''
self.request = request
members = filter(lambda x: x not in ['self', 'request'],
inspect.getargspec(self.__init__)[0])
self.__locals = dict(zip(members, args))
map(lambda t: setattr(self, t[0], t[1]), self.__locals.items())
kwargs.update(self.__locals)
self._chained_args = kwargs
if self.parent:
self._parent_instance = self.parent(request, **self._chained_args)
self._try_cross()
self._matching_outputs = get_matching_mime_types(
request, self.__class__)
