add categories to evaluation

app/crud.py

@@ -2,6 +2,7 @@ import app.models as models
 from sqlalchemy.orm.attributes import flag_modified
 
 from sqlalchemy.sql import text
+import pickle
 
 def get_songs_and_vote_for_session(db, session_name) -> list[models.Song]:
     session_entry = activate_session(db, session_name)
@@ -21,6 +22,7 @@ def get_all_songs_and_votes(db) -> list:
     songs.aca_artist,
     songs.title,
     songs.url,
+    songs.categories,
     COUNT(vote) FILTER (where vote = -1) as "nein" ,
     COUNT(vote) FILTER (where vote = 0) as "neutral", 
     COUNT(vote) FILTER (where vote = 1) as "ja"
@@ -28,7 +30,17 @@ def get_all_songs_and_votes(db) -> list:
     GROUP BY song_id ORDER BY song_id
     """)).fetchall()
 
-    return [dict(r._mapping) for r in res]
+    def process_row(r):
+        e = dict(r._mapping)
+        c = pickle.loads(e["categories"])
+        c = {k : bool(v) for k, v in c.items()}
+        e["categories"] = c
+
+        return e
+
+    res = [process_row(r) for r in res]
+
+    return res
 
 
 def create_song(db,