From: Artem Voroztsov <artem.voroztsov@...>
Date: 2008-10-19T17:27:56+09:00
Subject: Re: Using a result as a constant object?

2008/10/19 Tim Hunter <TimHunter@nc.rr.com>:
> Phy Prabab wrote:
>>
>> Hello,
>>
>> I am trying to understand how I can use a return from a method as a
>> constant name for a class.  What I am trying to do is take a return I find
>> in a db table and use that name as a class name so that I can use
>> activerecord.  I admit my understanding of ActiveRecord is extremely
>> immature so perhaps I am using it wrong.
>> ...
>> perMatrtix = subMatrix.find[:space].to.upcase
>>
>> class perMatrix < ActiveRecord::Base; end
>>
>> blah, blah, blah...
>>
>> So the return of the find, which is a name (turn to upper) as the name of
>> a class so that I can access that table within the database.
>>
>
> If you're getting the class name at run-time how would you write code that
> uses class after you've created it? I mean, you can't type the class name
> into your program now, you don't know what it is?
>
> I suspect that what you really want to do is simply create a class and
> assign the result to a variable. Check out Class.new.
>
> my_class = Class.new(ActiveRecord::Base)
> my_inst = my_class.new
>
>
>
>
> --
> RMagick: http://rmagick.rubyforge.org/
>
>

  my_class = Class.new(ActiveRecord::Base) {  set_table_name
subMatrix.find[:space].underscore.pluralize  }
  my_inst = my_class.new

Artem

PS:
Expression  "subMatrix.find[:space]" seems strange for me. What is it about?