From: Bryan Duxbury <bryan.duxbury@...>
Date: 2007-08-14T06:26:36+09:00
Subject: Re: Working with classname that is stored in a string

Glen Holcomb wrote:
> Hi all,

One thing you can do is not use a string at all, but pass the class name 
constant. If you've got a class like:

class MyClass
...
end

then you can do something like:

filtered_fields = filter_my_fields MyClass, [:field1, :field2]

and it works just fine.

Alternatively, you could use an AR extension like this:

class ActiveRecord::Base
  def filtered_fields(*fields)
    @attributes.reject{|name, value| fields.include?(name.intern)}
  end
end

Haven't run that code, but that should let you do something like
my_ar_instance.filtered_fields(:field1, :field2)

-- 
Posted via http://www.ruby-forum.com/.