Rails - Mar 2008 - Missing Method defined in controllers/application.rb

I have this in my controllers/application.rb:

class ApplicationController < ActionController::Base
...

  def datebalk!
    # set regexp for datebalks generated attributes
    c = /.*__dteblk/
    # Remove datebalks generated attributes from params hash
    delete_if { |k, v| c =~ k.to_s }
  end

...
end

When I call this from client_controllers.rb in this fashion:

    # need this to strip out observer attributes for datebalks plugin
    @client = @entity.build_client(params[:client].datebalk!)

I get this exception:

undefined method `datebalk!'' for
#<HashWithIndifferentAccess:0xb6c9276c>

RAILS_ROOT: /home/byrnejb/Software/Development/Projects/proforma
Application Trace | Framework Trace | Full Trace

app/controllers/clients_controller.rb:49:in `create''

I evidently misunderstand something fundamental about the role of
application.rb with respect to methods.  Where should method datebalk!
be defined or what have I done wrong?
-- 
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On 26 Mar 2008, at 14:53, James Byrne wrote:
>
>
> I evidently misunderstand something fundamental about the role of
> application.rb with respect to methods.  Where should method datebalk!
> be defined or what have I done wrong?
You''ve defined a method on ApplicationController (and hence
it''s
subclasses) but you''re calling it on an instance of Hash.

Perhaps the quickest way out would to make that method take as an  
argument the hash to work on.

Fred

(PS: the .* in your regexp does nothing, and certainly doesn''t  
guarentee that the match is found at the end of the string)

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Frederick Cheung wrote:
> 
> You''ve defined a method on ApplicationController (and hence
it''s
> subclasses) but you''re calling it on an instance of Hash.
> 
> Perhaps the quickest way out would to make that method take as an
> argument the hash to work on.
> 
> Fred
> 
This is the second time that I have made this type of error.  Perhaps 
eventually I will learn to understand what I am reading.
> (PS: the .* in your regexp does nothing, and certainly doesn''t
> guarentee that the match is found at the end of the string)
I take your point.  This is what I ended up with in 
config/initializers/hash_addins.rb

class Hash
  def datebalk!
    # set regexp for datebalks generated attributes
    c = /__dteblk\Z/
    # Remove datebalks generated attributes from params hash
    delete_if { |k, v| c =~ k.to_s }
  end
end

And this works just fine.  Thank you very much for the pointers.

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