Improved errorhandling during editing of books

cps/web.py

@@ -1649,6 +1649,8 @@ def shutdown():
         db.engine.dispose()
         ub.session.close()
         ub.engine.dispose()
+        # stop gevent server
+        # gevent_server.stop()
         # stop tornado server
         server = IOLoop.instance()
         server.add_callback(server.stop)
@@ -3030,6 +3032,7 @@ def edit_book(book_id):
         is_format = db.session.query(db.Data).filter(db.Data.book == book_id).filter(db.Data.format == file_ext.upper()).first()
         if is_format:
             # Format entry already exists, no need to update the database
+            app.logger.info('Bokk format already existing')
             pass
         else:
             db_format = db.Data(book_id, file_ext.upper(), file_size, file_name)
@@ -3037,6 +3040,7 @@ def edit_book(book_id):
 
     to_save = request.form.to_dict()
 
+    try:
         if book.title != to_save["book_title"]:
             book.title = to_save["book_title"]
             edited_books_id.add(book.id)
@@ -3219,6 +3223,11 @@ def edit_book(book_id):
             flash( error, category="error")
             return render_title_template('book_edit.html', book=book, authors=author_names, cc=cc,
                                          title=_(u"edit metadata"))
+    except Exception as e:
+        app.logger.exception(e)
+        db.session.rollback()
+        flash(_("Error editing book, please check logfile for details"), category="error")
+        return redirect(url_for('show_book', book_id=book.id))
 
 
 def save_cover(url, book_path):