def put(self, *args, **kwargs):
create = not self.is_saved()
if create:
self.subtree_cacheable = self.cacheable
self.linked_url_node_keys = [
str(node.key()) for node in self._get_linked_url_nodes()]
super(Widget, self).put(**kwargs)
if not self.cacheable:
assert not self.subtree_cacheable, (
'"%s" is uncacheable, therefore its subtree must '
'also be uncacheable.' % self.__class__.__name__)
if self.element_parent:
if (not self.subtree_cacheable
and self.element_parent.subtree_cacheable):
self.element_parent.subtree_cacheable = False
self.element_parent.put()
if (self.subtree_cacheable
and not self.element_parent.subtree_cacheable):
self.element_parent.update_subtree_cacheable()
invalidate_caches_for_node(self)
def delete(self, **kwargs):
parent_should_update = False
if self.element_parent:
parent = self.element_parent
parent_should_update = not self.subtree_cacheable
invalidate_caches_for_node(self)
super(Widget, self).delete(**kwargs)
if parent_should_update:
parent.update_subtree_cacheable()
def put(self, **kwargs):
this_is_root = not isinstance(self.url_parent, URLNode)
parent_is_root = (
not this_is_root and not isinstance(
self.url_parent.url_parent, URLNode))
if this_is_root:
prefix = ''
else:
prefix = self.url_parent.denormalized_url
if parent_is_root and not self.url_parent.url_fragment:
self.denormalized_url = prefix + self.url_fragment
else:
self.denormalized_url = '%s/%s' % (prefix, self.url_fragment)
# Need to compare the underlying value which was last retrieved
# from the datastore before put().
url_changed = self.property_changed('denormalized_url')
super(URLNode, self).put(**kwargs)
if url_changed:
# TODO: Requires test
# Re-put all children, in order to update their URLs, causing
# the entire subtree to be updated.
for child in get_direct_url_node_children(self):
child.put()
# TODO: Requires test
widgets = (
Widget.all()
.filter('linked_url_node_keys =', str(self.key())).fetch(None)
)
for widget in widgets:
invalidate_caches_for_node(widget)
