From: Niklas Frykholm <niklas@...>
Date: 2001-11-17T02:47:27+09:00
Subject: [ruby-talk:25547] Re: Getting a class object from a string containg its name

[Lars Christensen]
> I need to get a reference to a class object from a string with the name of
> the class. I want to do this in a secure way because the string comes from
> an external source. I could not find any easy way to convert a string or
> symbol to a class reference. I found two approaches though:
...
> Did I overlook some easy way to look up a symbol or string in the
> namespace of Classes?

    irb(main):012:0> Object.const_get("String")
    String

But this works only for top-level classes. For Net::HTTP you need to do

    irb(main):018:0> Object.const_get('Net').const_get('HTTP')
    Net::HTTP

// Niklas