From: Sergey Volkov <gm.vlkv@...>
Date: 2006-05-03T00:59:58+09:00
Subject: Re: How to get a new instance of a class given a String

Generalizing Daniel's solution:

543> cat tClassByName.rb 
#!/bin/ruby -w

def class_by_name name
    name.split("::").inject(Object){ |c,n|
        c.const_get(n)
    }
end

p class_by_name( 'Hash' )
p class_by_name( 'File::Stat' )
__END__

544> ruby tClassByName.rb
Hash
File::Stat

regards
Sergey

----- Original Message ----- 
From: "Daniel Harple" <dharple@generalconsumption.org>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Tuesday, May 02, 2006 11:06 AM
Subject: Re: How to get a new instance of a class given a String


> On May 2, 2006, at 5:03 PM, David Clements wrote:
> 
>> class_name = "UserPreference"
>> up = Class.class_for_name(class_name).new
> 
> up = Object.const_get(class_name).new
> 
> -- Daniel