vendor/rails/activesupport/lib/active_support/core_ext/array/wrapper.rb

   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