Rails - May 2008 - Scope Confusion - Controller iVars in Modules

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





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On May 17, 2008, at 4:41 PM, Greg Willits wrote:
> My distilled Rails example would be something like this. I require
> the file in application.rb
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




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