From: Arlen Cuss <ar@...>
Date: 2012-10-24T19:31:05+09:00
Subject: Re: Dynamically creating subclasses

Hi Sun,

How about this?

1.9.3p194 :001 > class A; def initialize; puts "new A"; end; end
=> nil 
1.9.3p194 :003 > name = "X"
=> "X" 
1.9.3p194 :007 > Object.const_set name, Class.new(A)
=> X 
1.9.3p194 :008 > X
=> X 
1.9.3p194 :009 > X.new
new A
=> #<X:0x007fad242a1448> 
1.9.3p194 :010 > 



On Wednesday, 24 October 2012 at 9:25 PM, The Sun wrote:

> Hi,
> 
> I have to dynamically create a number of classes with different names.
> All of them have to inherit from the same subclass.
> 
> I tried the following:
> 
> eval(class myName < ParentClass; end) where myName is a String
> dynamically set together
> or the same without eval.
> 
> In fact i succeeded in creating objects of the new classes (myName.new)
> and the name seems to be set right, but the instantiation does not call
> the parents constructor.
> 
> Can you point to my mistake?
> 
> Thanks
> sun
> 
> -- 
> Posted via http://www.ruby-forum.com/.