| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 |
- from django.urls import get_script_prefix, resolve
- def get_breadcrumbs(url, request=None):
- """
- Given a url returns a list of breadcrumbs, which are each a
- tuple of (name, url).
- """
- from rest_framework.reverse import preserve_builtin_query_params
- 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
- cls = getattr(view, 'cls', None)
- initkwargs = getattr(view, 'initkwargs', {})
- if cls is not None and issubclass(cls, APIView):
- # Don't list the same view twice in a row.
- # Probably an optional trailing slash.
- if not seen or seen[-1] != view:
- c = cls(**initkwargs)
- name = c.get_view_name()
- insert_url = preserve_builtin_query_params(prefix + url, request)
- breadcrumbs_list.insert(0, (name, insert_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, [])
|
