From: Josselin <josselin@...>
Date: 2007-10-01T23:35:07+09:00
Subject: passing dynamic parameter in a bloc

in a RoR plugin, I am passing a string parameter (column name) i.e  
'karma' as the sort parameter:

User.select { |u| u.id > 20 }.sort_by { |u| u.id }
"SELECT * FROM users WHERE (users.`karma` > 20) ORDER BY users.karma"

Is there any tric to pass a dynamic parameter as a variable ?
User.select { |u| u.id > 20 }.sort_by { |u| ...... }

I tried
@criteria = 'id'
User.select { |u| u.id > 20 }.sort_by { |u| u.send @criteria }

but it generates a wrong SQL
"SELECT * FROM users WHERE users.`id` > 20 ORDER BY users.send"


thanks for your help

joss