Added rest framework

thirdpart/rest_framework/utils/breadcrumbs.py

@@ -0,0 +1,38 @@
+from django.core.urlresolvers import resolve, get_script_prefix
+
+
+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 isinstance(getattr(view, 'cls_instance', None), APIView):
+                # Don't list the same view twice in a row.
+                # Probably an optional trailing slash.
+                if not seen or seen[-1] != view:
+                    breadcrumbs_list.insert(0, (view.cls_instance.get_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
+            return breadcrumbs_recursive(url.rstrip('/'), breadcrumbs_list, prefix, seen)
+
+        # Drop trailing non-slash off the end and continue to try to resolve more breadcrumbs
+        return breadcrumbs_recursive(url[:url.rfind('/') + 1], breadcrumbs_list, prefix, seen)
+
+    prefix = get_script_prefix().rstrip('/')
+    url = url[len(prefix):]
+    return breadcrumbs_recursive(url, [], prefix, [])