rails engine initializer to add upload path

sample: lib/mymodule/lib/mymodule/engine.rb

module MyModule

  class Engine < ::Rails::Engine

    isolate_namespace MyModule

    #dependency setting is important here

    initializer 'Entcommerce.initialize_upload', :after=> :disable_dependency_loading do |app|

      #Rails.logger.debug "Root: " + Rails.root.to_s

      config.upload_path = Rails.root.join("assets").join("images").join("product")

      #Rails.logger.debug "upload_path: " + config.upload_path.to_s

    end

  end

end

#To get this setting from controller
Rails.application.config.upload_path

reference:

http://www.cowboycoded.com/2010/08/02/hooking-in-your-rails-3-engine-or-railtie-initializer-in-the-right-place/