From: Alex Fenton <aff28@...>
Date: 2007-11-27T21:05:05+09:00
Subject: Re: how to change all values for object

Bober wrote:

> @invo = Post.find(params[:id])
> @a = @invo.attributes
> 
> @a.each { |m, n|
>       @invo.m = "new_value"
> }
> 
> But, I see "undefined method `m=' "

Because you are calling the literal method "m=", which doesn't exist. 
You want instead, something like (untested, I don't use ActiveRecord).

@invo.send("#{m}=", "new_value")

alex