add djangorestframework

thirdpart/djangorestframework/utils/breadcrumbs.py

@@ -0,0 +1,32 @@
+from django.core.urlresolvers import resolve
+
+def get_breadcrumbs(url):
+    """Given a url returns a list of breadcrumbs, which are each a tuple of (name, url)."""
+
+    from djangorestframework.views import View
+
+    def breadcrumbs_recursive(url, breadcrumbs_list):
+        """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 isinstance(getattr(view, 'cls_instance', None), View):
+                breadcrumbs_list.insert(0, (view.cls_instance.get_name(), 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, [])
+