from __future__ import unicode_literals from django.core.urlresolvers import resolve, get_script_prefix from rest_framework.utils.formatting import get_view_name def get_breadcrumbs(url): """ Given a url returns a list of breadcrumbs, which are each a tuple of (name, url). """ from rest_framework.views import APIView def breadcrumbs_recursive(url, breadcrumbs_list, prefix, seen): """ Add tuples of (name, url) to the breadcrumbs list, progressively chomping off parts of the url. """ try: (view, unused_args, unused_kwargs) = resolve(url) except Exception: pass else: # Check if this is a REST framework view, # and if so add it to the breadcrumbs if issubclass(getattr(view, 'cls', None), APIView): # Don't list the same view twice in a row. # Probably an optional trailing slash. if not seen or seen[-1] != view: suffix = getattr(view, 'suffix', None) name = get_view_name(view.cls, suffix) breadcrumbs_list.insert(0, (name, prefix + url)) seen.append(view) if url == '': # All done return breadcrumbs_list elif url.endswith('/'): # Drop trailing slash off the end and continue to try to # resolve more breadcrumbs url = url.rstrip('/') return breadcrumbs_recursive(url, breadcrumbs_list, prefix, seen) # Drop trailing non-slash off the end and continue to try to # resolve more breadcrumbs url = url[:url.rfind('/') + 1] return breadcrumbs_recursive(url, breadcrumbs_list, prefix, seen) prefix = get_script_prefix().rstrip('/') url = url[len(prefix):] return breadcrumbs_recursive(url, [], prefix, [])