def render(self, context):
# if a 500 error happens we get an empty context, in which case
# we should just return to let the 500.html template render
if "request" not in context:
return "<!-- menu failed to render due to missing request in the context -->"
menus = Menu.process(context["request"])
# recursively find the selected item
def find_selected(menu):
process = []
for item in menu:
if item.selected:
return item
if len(item.children) > 0:
process.append(item)
for item in process:
r = find_selected(item.children)
if r is not None:
return r
return None
selected_menu = None
for name in menus:
found_menu = find_selected(menus[name])
if found_menu:
if selected_menu is None or len(selected_menu.url) < len(found_menu.url):
# since our call to Menu.process above allows for menus
# in multiple menus we reset the selected attr to False
# if we find a more specific match
if selected_menu is not None:
selected_menu.selected = False
selected_menu = found_menu
# now for the submenu
submenu = []
has_submenu = False
if selected_menu is not None:
if selected_menu.parent is not None:
submenu = selected_menu.parent.children
has_submenu = True
elif len(selected_menu.children) > 0:
submenu = selected_menu.children
has_submenu = True
# set the items in our context
context["menus"] = menus
context["selected_menu"] = selected_menu
context["submenu"] = submenu
context["has_submenu"] = has_submenu
return ""
