From: Gary Wright <gwtmp01@...>
Date: 2009-07-17T03:30:42+09:00
Subject: Re: Interpolation question with each do block


On Jul 16, 2009, at 1:50 PM, Älphä Blüë wrote:

> Hi all,
>
> I have a quick interpolation question..
>
> def calculate_tsos(model, datavar)
>  var = model.find(:all)
>  var.each do |rows|
>    puts "#{model} (Team = #{rows.team.name} | #{datavar} =
> #{rows.datavar}"
>  end
> end
>
> The only thing that doesn't work is the datavar within interpolation  
> in
> the puts statement.  How do I make it so that my datavar value is  
> passed
> to datavar in the puts statement so that it would be similar to:
>
> datavar = ydspgm
>
> rows.datavar should be equal to rows.ydspgm  but it's not.  I'll get  
> an
> undefined method datavar.  I'm not sure how I can pass the name of  
> that
> variable to that interpolation piece of code.

I'm not 100% sure but I believe, the problem is that you want to
call the method named by the *contents* of datavar but instead you
are calling the method named 'datavar', which of course isn't defined.

Try this instead:

> puts "#{model} (Team = #{rows.team.name} | #{datavar} =  
> #{rows.__send__(datavar)}"


Gary Wright