alternate way to find series with missing books to use in series add drop-down - fixes issue with a new series with no bsl yet not showin in list

series.py

@@ -48,11 +48,21 @@ def CalcAvgRating(sid):
     return rating
 
 def ListOfSeriesWithMissingBooks():
-    with db.engine.connect() as conn:
-        res=conn.exec_driver_sql( "select id, title, num_books, count from ( select s.id, s.title, s.num_books, count(bsl.book_id) from series s left outer join book_series_link bsl on bsl.series_id=s.id where bsl.book_num is not null group by s.id) as foo where num_books > count")
+    from main import Book_Series_Link
+
+    rows = Series.query.outerjoin(Book_Series_Link).add_columns(Series.id,Series.title,Series.num_books,Book_Series_Link.book_num).order_by(Series.id,Book_Series_Link.book_num).all()
     tmp=[]
-    for row in res:
-        tmp.append({'id': row[0], 'title': row[1]})
+    tots={}
+    for row in rows:
+        if row.id not in tots:
+            tots[row.id]={ 'title': row.title, 'num_books': row.num_books, 'count': 0 }
+        if row.book_num is None:
+            continue
+        else:
+            tots[row.id]['count'] += 1
+    for idx in tots:
+        if tots[idx]['num_books'] > tots[idx]['count']:
+            tmp.append( { 'id': idx, 'title': tots[idx]['title'] } )
     return tmp
 
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