From: Joey <rubytalk@...>
Date: 2006-05-31T17:15:17+09:00
Subject: Re: class from string

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http://www.eachmapinject.com/class_name.html

j`ey
http://www.eachmapinject.com <http://www.eachmapinject.com/class_name.html>

$_=%q{$_=%q{Q};sub(/Q/,$_);print};sub(/Q/,$_);print



On 5/31/06, Ezra Zygmuntowicz <ezmobius@gmail.com> wrote:
>
>
> On May 30, 2006, at 4:52 PM, Dan Kirkwood wrote:
>
> > Is there a better way to get to a class when you have the class
> > name in
> > a string?
> > (This is rails-related, btw)..  For instance, if I have a string
> > clname
> > = 'Train',  and I want to access a class method Train#label.   I
> > can do
> > this:
> >
> > clname = 'Train'
> > label = eval "#{clname}.label"
> >
> > Is there a better way?
> >
> > --
> > Posted via http://www.ruby-forum.com/.
> >
>
> In rails you can use #constantize
>
> clname = 'Train'
> clname.constantize.label
>
> But you really should try to search before posting. This was asked a
> bunch of times in the last few weeks.
>
> Cheers-
> -Ezra
>
>

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