Fixed BUG-02 (recalc rating on book change), also added route to reset all ratings in Admin menu

series.py

@@ -42,8 +42,8 @@ class SeriesForm(FlaskForm):
 def CalcAvgRating(sid):
     res=db.engine.execute("select round(avg(to_number(r.name, '99')),1) as rating from book b, rating r, series s, book_series_link bsl where s.id={} and s.id = bsl.series_id and bsl.book_id = b.id and b.rating = r.id and r.name ~ E'^\\\\d+$'".format(sid))
     for row in res:
-        print( row )
-    return row.rating
+        rating = row.rating
+    return rating
 
 def ListOfSeriesWithMissingBooks():
     res=db.engine.execute("select id, title, num_books, count from ( select s.id, s.title, s.num_books, count(bsl.book_id) from series s, book_series_link bsl where s.id = bsl.series_id group by s.id ) as foo where num_books > count")
@@ -121,6 +121,23 @@ def series(id):
         form = SeriesForm(request.values, obj=series)
     return render_template("series.html", form=form, page_title=page_title, message=st.GetMessage(), alert=st.GetAlert() )
 
+################################################################################
+# /series/rating_reset -> forces a reset of calculated ratings of all series
+################################################################################
+@app.route("/seriess/rating_reset", methods=["GET"])
+def reset_all_series_ratings():
+    s_list = Series.query.all()
+    try:
+        for s in s_list:
+           s.calcd_rating = CalcAvgRating(s.id)
+        db.session.commit()
+        st.SetMessage("Successfully reset calculated average ratings for all series");
+        return render_template("base.html", message=st.GetMessage(), alert=st.GetAlert() )
+    except:
+        st.SetAlert("danger")
+        st.SetMessage("Failed to reset calculated average rating for all series");
+        return render_template("base.html", message=st.GetMessage(), alert=st.GetAlert() )
+
 ################################################################################
 # Gets the Series matching id from DB, helper func in jinja2 code to show books
 ################################################################################