From: Jan Svitok <jan.svitok@...>
Date: 2006-09-02T08:43:01+09:00
Subject: Re: How can I do this without eval...

On 9/2/06, J2M <james2mccarthy@gmail.com> wrote:
>   def load_default_attributes(model_name, options = {})
>     fixture = options[:fixture] || :default
>     attributes = temp_attributes = model = {}
>     instance_eval <<-FIN
>       temp_attributes = #{model_name.to_s.pluralize}("#{fixture}")
>       model = #{model_name.to_s.capitalize}
>     FIN

Hi,

model = const_get(model_name.to_s.capitalize)

Classes are constants. So you can get them by name (string or symbol)
with Module#const_get

temp_attributes... I don't know what fixtures are, I'll just say that you can
- call a method with Object#send(name, arg1, arg2) or send(name, *args)
- get/set instance variable with
instance_variable_get/instance_variable_set (don't forget the @!
my_object.instance_variable_get('@name') )
- class variables with Module#class_variable_get/.._set

and generally, look into Module, Class, Object and Kernel for other
useful methods ;-)

finally http://www.rubycentral.com/book/ospace.html can be helpful.