Hi, I have two db tables:
board (name, created_on) article(board, name, title) currently, in my html I do a naive loop {{for article in articles}} {{=article.board.name}} {{pass}} I would like to change it and do something like: articles = db.select.all....... board_ids = set(map(lambda a: a.board_id, articles)) boards = db.selected all of the id. my problem is: if I do: board_ids = set(map(lambda a: a.board*.id*, articles)) it goes to fetch the board every time, to get the id. and if I don't I have a reference and not an Id... can someone explain how to do it efficiently in python? UDi.