get hashes working w/ association find_or_create in rails 2.3.x > 2.3.8

db_col

--- !map:HashWithIndifferentAccess 
body: other test comment body
type: test

rails_2_3_association_find_or_create_fix.rb

module ActiveRecord
  module Associations
    class AssociationCollection < AssociationProxy
        def method_missing(method, *args, &block)
          case method.to_s
          when 'find_or_create'
            return find(:first, :conditions => args.first) || create(args.first)
          when /^find_or_create_by_(.*)$/
            rest = $1
            find_args = pull_finder_args_from(DynamicFinderMatch.match(method).attribute_names, *args)
            return  send("find_by_#{rest}", *find_args) ||
                    method_missing("create_by_#{rest}", *args, &block)
          when /^create_by_(.*)$/
            attribute_names = $1.split('_and_')
            if args[0].is_a? Hash
              create_args = args[0]
            else
              create_args = Hash[ attribute_names.zip(args.first(attribute_names.length))]
              if args.length > attribute_names.length && args[attribute_names.length].is_a?(Hash)
                create_args.merge! args[attribute_names.length]
              end
            end
            return create create_args, &block
          end

          if @target.respond_to?(method) || (!@reflection.klass.respond_to?(method) && Class.respond_to?(method))
            if block_given?
              super { |*block_args| yield(*block_args) }
            else
              super
            end
          elsif @reflection.klass.scopes.include?(method)
            @reflection.klass.scopes[method].call(self, *args)
          else          
            with_scope(construct_scope) do
              if block_given?
                @reflection.klass.send(method, *args) { |*block_args| yield(*block_args) }
              else
                @reflection.klass.send(method, *args)
              end
            end
          end
        end
    end
  end
end

test.rb

other_comment = post.comments.find_or_create_by_body(:body => 'other test comment body', :type => 'test')
other_comment.body
# => {:body => 'other test comment body', :type => 'test'}

workaround.rb

other_comment = post.comments.find_or_create_by_body('other test comment body') do |comment|
  comment.type = 'test'
end

other_comment.body
# => "other test comment body"