lemoncurry/lemoncurry/breadcrumbs.py

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from django.urls import reverse
breadcrumbs = {}
class Crumb:
def __init__(self, route, label=None, parent=None):
self.route = route
self._label = label
self.parent = parent
@property
def label(self):
return self._label
def __eq__(self, other):
if hasattr(other, 'route'):
return self.route == other.route
return self.route == other
def __hash__(self):
return hash(self.route)
def __repr__(self):
return "Crumb('{0}')".format(self.route)
def use_match(self, match):
self.match = match
@property
def url(self):
return reverse(self.route)
def add(route, label=None, parent=None):
if not isinstance(route, Crumb):
route = Crumb(route, label, parent)
breadcrumbs[route.route] = route
def find(match):
crumbs = []
route = match.view_name
while route:
crumb = breadcrumbs[route]
crumb.use_match(match)
crumbs.append(crumb)
route = crumb.parent
crumbs.reverse()
return crumbs