From: Robert Klemme <shortcutter@...>
Date: 2009-03-18T21:10:25+09:00
Subject: Re: REXML get specific element

2009/3/18 Pierre Pat <theyojimbo@gmail.com>:
> All,
>
> I'm trying for the first time to play with XML and Ruby.
> Since I have only the core library at the moment, my choice went
> directly for REXML.
>
> So, here is my problem.
> I'm willing to get a specific element in my xml file.
>
> Normally I would do something like this:
> doc.root.elements["programmer[@name='Matz']"]
>
> But let's say I have a user interface, and I let a user enter the
> programmer he wants to see. How can I look for an element using a
> variable?
> I hoped something like this would work:
> entered_name = 'Matz'
> doc.root.elements["magician[@name=#{entered_name}]"]

You forgot the single quotes around #{}, i.e. you must only replace
"Matz" with "#{entered_name}":

doc.root.elements["programmer[@name='#{entered_name}']"]

> Unfortunately, it didn't...
>
> After trying a few things, check with uncle google and in this forum,
> I'm driving out of clues, so I'd appreciate if someone could show me the
> correct way!

Cheers

robert

-- 
remember.guy do |as, often| as.you_can - without end