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from django.core.urlresolvers import resolve
from djangorestframework.description import get_name
def get_breadcrumbs(url):
"""Given a url returns a list of breadcrumbs, which are each a tuple of (name, url)."""
def breadcrumbs_recursive(url, breadcrumbs_list):
"""Add tuples of (name, url) to the breadcrumbs list, progressively chomping off parts of the url."""
# This is just like compsci 101 all over again...
try:
(view, unused_args, unused_kwargs) = resolve(url)
except:
pass
else:
if callable(view):
breadcrumbs_list.insert(0, (get_name(view), url))
if url == '':
# All done
return breadcrumbs_list
elif url.endswith('/'):
# Drop trailing slash off the end and continue to try to resolve more breadcrumbs
return breadcrumbs_recursive(url.rstrip('/'), breadcrumbs_list)
# Drop trailing non-slash off the end and continue to try to resolve more breadcrumbs
return breadcrumbs_recursive(url[:url.rfind('/') + 1], breadcrumbs_list)
return breadcrumbs_recursive(url, [])
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