Scope Confusion - Controller iVars in Modules

rubyonrails-talk
1

I've created a module to include in a Controller. Basically it works, but I am expecting methods in the module to have access to instance variables from the controller, and that appears to not be the case. Yet, a simple Ruby example says it should be. I'm not sure what's different.

Simple Example:

   module ShapeStuff      def set_type        @type = 'circle'      end    end

   class Shape      include ShapeStuff      attr_accessor :type      def initialize        @type = 'square'      end    end

   x = Shape.new    puts x.type # 'square'

   x.set_type    puts x.type # 'circle'

My distilled Rails example would be something like this. I require the file in application.rb.

   module EventControls      def change_test_var        @test_var = 'y'      end    end

   class UsersAdminController < ApplicationController

     include EventControls      layout '1col_admin'      attr_accessor :test_var

     def some_action        @test_var = 'x'        change_test_var      end    end

Using debug(@test_var) the value doesn't ever appear to change from 'x'

Confused...

-- gw

2

oops, I meant environment.rb, of course

and... just to add more to this, I expected session to be available to the module methods too, but it isn't.

for now I'm passing ivars and session as params to module methods, but I'd really like to get rid of that.

-- gw