Rails - Apr 2007 - Re: Error Starting Rails - DEPRECATED_INSTANCE_VARIABLES

Matt Stone wrote:
> `const_missing'': uninitialized constant
> ActionController::Base::DEPRECATED_INSTANCE_VARIABLES (NameError)
>         from
> 
I''m running into the same problem on a debian install (not a virtual 
machine). I would appreciate and information you might have discovered 
to help solve this problem!


Jeremy

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Hi, could you post the relevant code?

-Conrad

On 4/21/07, Jeremy Seitz
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
>
> Matt Stone wrote:
> > `const_missing'': uninitialized constant
> > ActionController::Base::DEPRECATED_INSTANCE_VARIABLES (NameError)
> >         from
> >
>
> I''m running into the same problem on a debian install (not a
virtual
> machine). I would appreciate and information you might have discovered
> to help solve this problem!
>
>
> Jeremy
>
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>
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Conrad Taylor wrote:
> Hi, could you post the relevant code?
> 
> -Conrad
Hmm. That''s the problem, I don''t know what the relevant code
is. This
happens whenever mongrel_rails is started. It also happens when I start 
script/console:

 $ script/console
Loading development environment.
/home/jeremy/sites/dnweb/vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:477:in
`const_missing'':NameError: uninitialized constant 
ActionController::Base::DEPRECATED_INSTANCE_VARIABLES
/home/jeremy/sites/dnweb/app/controllers/application.rb:2:in 
`helper'':ArgumentError: wrong number of arguments (1 for
0)
>> 
Now, application.rb, line 2, simply has :

  helper :all

I don''t see why "helper" would require zero arguments.

We''re using edge rails, the most recent release (as of Friday).
It''s
frozen in our /vendor tree. This same setup works well under OSX but 
fails on debian.

If I remove the vendor/rails tree and let it drop back to the installed 
version of rails (1.2.3) via gem, it fails as well:

$ script/console
Loading development environment.
/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/initializer.rb:328:in 
`send'':NoMethodError: undefined method `session='' for 
ActionController::Base:Class

I suspect there is some version mismatch between rails and something in 
our debian environment. Or perhaps there''s something rails needs that
is
missing. I was hoping someone had seen this problem before and would 
reply "Hey, you just need to do X,Y,Z and it''s easy to fix."
Guess not?
:)

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Ok, I found the problem(s)... updating to ruby 1.8.5 (had 1.8.4 
previously) fixed the DEPRECATED_INSTANCE_VARIABLES error. As for the 
other two errors I had with helper and session:

1. helper problem:

I''m not really sure why, but the following code, in 
app/controllers/application.rb, worked under OSX, using rails 1.2.3 and 
ruby 1.8.5:


  class ApplicationController < ActionController::Base
    helper :all

However, under my debian environment, it failed. So I changed it to load 
the helpers I needed:

  class ApplicationController < ActionController::Base
    helper :css, :text, :list, etc...

2. `send'':NoMethodError: undefined method `session='' for 
ActionController::Base:Class

I had this line in environment.rb:

   config.action_controller.session = { :secret => "xxxxxx" }

I remember putting this line in a long time ago when troubleshooting 
problems with sessions. I had read online that this helped. In any case, 
I had to remove it to make the error message go away. It does not seem 
like it was really needed, since the app works now :)

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