Rails - Jul 2005 - Controller Inheritance again ... how to share db-accessing methods?

I''m doing this same thing : (Controller Inheritance), described here:
http://justinfrench.com/index.php?id=122

But - in my inherited controller (AdminAreaController in his example)
- how can I put methods that access the database stuff?

(How can one common/shared controller use a different model depending
on what controller has inherited it and calling it at this moment?)


EXAMPLE:
====== BAD BAD BAD : =====class NewsController < ApplicationController
  def show
    @items = News.find(params[:id])
  end
end
class DatesController < ApplicationController
  def show
    @items = Dates.find(params[:id])
  end
end
class LinksController < ApplicationController
  def show
    @items = Links.find(params[:id])
  end
end

HOW CAN I DO THIS?
======== ? POSSIBLE ? =====class SharedController < ApplicationController
  def show
    @item = self.mymodel.find(params[:id])
  end
  def list
    @items = self.mymodel.find(:all)
  end
end
class NewsController < SharedController
  def self.mymodel ; News ; done
end
class DatesController < SharedController
  def self.mymodel ; Dates ; done
end
class LinksController < SharedController
  def self.mymodel ; Links ; done
end


It doesn''t work as-is.  Maybe I''m missing something simple?

Miles Keaton <mileskeaton@...> writes:
> 
> I''m doing this same thing : (Controller Inheritance), described
here:
> http://justinfrench.com/index.php?id=122
> 
> But - in my inherited controller (AdminAreaController in his example)
> - how can I put methods that access the database stuff?
> 
> (How can one common/shared controller use a different model depending
> on what controller has inherited it and calling it at this moment?)
> 
I''m sure there''s a more elegant way to get the class name from
the model symbol,
but here''s what I''m doing:

Parent Controller:

class ParentController < ApplicationController

  def set_class_name(class_name)
    @class_name = class_name
  end

  def record_class
    Kernel.const_get @class_name
  end

  def detail
    @record_detail = record_class.find(params[:id])
  end
end

Child Controller:

class ChildController < ParentController
  model :child_model
  
  def initialize
    super
    set_class_name "ChildModel"
  end
    
end