1  module ActiveSupport #:nodoc:
   2    module CoreExtensions #:nodoc:
   3      module Array #:nodoc:
   4        module Wrapper
   5          # Wraps the object in an Array unless it's an Array.  Converts the
   6          # object to an Array using #to_ary if it implements that.
   7          def wrap(object)
   8            case object
   9            when nil
  10              []
  11            when self
  12              object
  13            else
  14              if object.respond_to?(:to_ary)
  15                object.to_ary
  16              else
  17                [object]
  18              end
  19            end
  20          end
  21        end
  22      end
  23    end
  24  end