Override/Extend Rails Core classes OR Strip attributes before Save



# active_record_base_extenstion.rb
class ActiveRecord::Base
  before_save :clean_data
  def clean_data
    # trim whitespace from beginning and end of string attributes
    attribute_names.each do |name|
      if send(name).respond_to?(:strip)
        send("#{name}=", send(name).strip)
      end
    end
  end
end
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