fix new tags in csv export

diff --git a/telemeta/views/playlist.py b/telemeta/views/playlist.py
index ade8fc23c1a66f91a7948827e8ba20407e26677c..a178255235d5c96807ea47803b0cfc16ecda2319 100644 (file)
--- a/telemeta/views/playlist.py
+++ b/telemeta/views/playlist.py
@@ -111,8 +111,12 @@ class PlaylistView(object):
                     elements.append(collection)
 
         if elements:
-            element = elements[0].to_dict_with_more()
+            element = elements_base[0].to_dict_with_more()
             tags = element.keys()
+            for e in elements:
+                for key in e.keys():
+                    if not key in tags:
+                        tags.append(key)
             # code and title on the two first column
             tags.remove('code')
             tags.remove('title')