Skip url parsing in redirect if url is full url or starts with root_path

ckan/lib/helpers.py

@@ -148,6 +148,15 @@ def redirect_to(*args, **kw):
         toolkit.redirect_to('dataset_read', id='changed')
 
     '''
+    # Remove LANG from root_path so that we do not need to parse locales
+    root_path = config.get('ckan.root_path', None)
+    if root_path:
+        root_path = re.sub('/{{LANG}}', '', root_path)
+
+    # If args contain full url eg. http://example.com or url starting with root_path skip url parsing
+    if args and (is_url(args[0]) or ( root_path and args[0].startswith(root_path))) :
+        _routes_redirect_to(args[0])
+
     if are_there_flash_messages():
         kw['__no_cache__'] = True
     return _redirect_to(url_for(*args, **kw))