From: dima <dejan.dimic@...>
Date: 2007-08-31T06:40:04+09:00
Subject: Re: REXML Element exists question

You should consider using XPaths capabilities of REXML.

http://stdlib.rubyonrails.org/libdoc/rexml/rdoc/index.html
http://www.ruby-doc.org/stdlib/libdoc/rexml/rdoc/classes/REXML/XPath.html
http://www.ibm.com/developerworks/xml/library/x-matters18.html
http://www.germane-software.com/software/rexml/docs/tutorial.html




On Aug 30, 1:26 pm, Urban Hafner <ur...@bettong.net> wrote:
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> On Aug 30, 2007, at 12:35 , John Butler wrote:
>
> > My question is there a more elegant way to this?  I dont want to
> > have to
> > write an if/case statment for every possible element.  I did try the
> > below but that gave me an error on the nil? because it couldnt find
> > the
> > element to test if it was nil, thats why im suprised the above code
> > works.
>
> > !element.elements["Client"].nil ? project.client =
> > element.elements["Client"].text : project.client = nil
>
> I have no idea of REXML but you are missing a ? here. The one present is
> the one of the ?: operator, but you need the .nil? method and not the
> nil method so you have to add a second one.
>
> And if everything works like the above (i.e. the XML Tag has the same
> name as the model attribute) then you could use something like this
> (untested of course) and maybe stick it into a method:
>
> e = "Client"
> meth = "#{e.downcase}=".to_sym
> text = !element.elements[e].nil? ? element.elements[e].text : nil
> project.send(meth, text)
>
> Urban
>
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