Rails - Sep 2006 - Overriding ActionView::Helpers::InstanceTag::DEFAULT_TEXT_AREA_OPTIONS

What is the best way to override some of the FormHelper default
options? Right now I''m adding this to the beginning of my
environment.rb:

ActionView::Helpers::InstanceTag::DEFAULT_TEXT_AREA_OPTIONS = { "cols"
=> 80, "rows" => 5 }

Is that the way it''s supposed to be done?


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Actually, you can override it with the right statements.

The constant is defined as:
http://caboo.se/doc/classes/ActionView/Helpers/InstanceTag.html
http://caboo.se/doc/classes/ActionView/Helpers/InstanceTag.html 
DEFAULT_TEXT_AREA_OPTIONS = { "cols" => 40, "rows" =>
20 }.freeze unless
const_defined?(:DEFAULT_TEXT_AREA_OPTIONS)

The key is the "unless const_defined?(...)".
It says that the constant should be defined and frozen, UNLESS it is aready
defined.

How do you define it before ActionView::Helpers::InstanceTag is defined?.
Well, just define it at the beginning of environment.rb, however, since
neither ActionView, Helpers or InstanceTag is defined yet, we must define
them fully with Module/Class...End blocks like this:

module ActionView
  module Helpers
    class InstanceTag
      DEFAULT_TEXT_AREA_OPTIONS = { :cols => 60, :rows => 10 }
    end
  end
end

So, just add the code above at the top of your config/environment.rb, and
you should be all set and warning-free. I hope this helps someone.

Gabriel Medina.
http://www.dottut.com/ http://www.dottut.com/ 





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