from UserDict import DictMixin
from hashlib import sha1
+from django.contrib.sites.models import Site
from django.core.cache import cache
from django.core.exceptions import ValidationError
from django.core.urlresolvers import NoReverseMatch
self._cache = {}
def __getitem__(self, key):
- return Navigation.objects.get_for_node(self.node, key)
- #if key not in self._cache:
- # try:
- # self._cache[key] = Navigation.objects.get_for_node(self.node, key)
- # except Navigation.DoesNotExist:
- # self._cache[key] = None
- #return self._cache[key]
+ if key not in self._cache:
+ try:
+ self._cache[key] = Navigation.objects.get_for_node(self.node, key)
+ except Navigation.DoesNotExist:
+ self._cache[key] = None
+ return self._cache[key]
def navigation(self):
}
navs = self.filter(key=key, **kwargs).select_related('node').order_by('-node__%s' % opts.level_attr)
nav = navs[0]
- roots = nav.roots.all().select_related('target_node')
+ roots = nav.roots.all().select_related('target_node').order_by('order')
item_opts = NavigationItem._mptt_meta
by_pk = {}
tree_ids = []
+ site_root_node = Site.objects.get_current().root_node
+
for root in roots:
by_pk[root.pk] = root
tree_ids.append(getattr(root, item_opts.tree_id_attr))
root._cached_children = []
+ if root.target_node:
+ root.target_node.get_path(root=site_root_node)
+ root.navigation = nav
kwargs = {
'%s__in' % item_opts.tree_id_attr: tree_ids,
parent_pk = getattr(item, '%s_id' % item_opts.parent_attr)
item.parent = by_pk[parent_pk]
item.parent._cached_children.append(item)
+ if item.target_node:
+ item.target_node.get_path(root=site_root_node)
cached = roots
cache.set(cache_key, cached)
# the same as the request path, check whether the target node is an ancestor
# of the requested node. If so, this is active unless the target node
# is the same as the ``host node`` for this navigation structure.
- try:
- host_node = self.get_root().navigation.node
- except AttributeError:
- pass
- else:
- if self.target_node != host_node and self.target_node.is_ancestor_of(request.node):
- return True
+ root = self
+
+ # The common case will be cached items, whose parents are cached with them.
+ while root.parent is not None:
+ root = root.parent
+
+ host_node_id = root.navigation.node_id
+ if self.target_node.pk != host_node_id and self.target_node.is_ancestor_of(request.node):
+ return True
return False