acts_as_list fix

gistfile1.txt

# config/initializers/acts_as_list.rb
module ActsAsList::InstanceMethods
  private
    # change acts_as_list to *only* move a new record to bottom if 'position' value is blank
    def add_to_list_bottom_with_check
      add_to_list_bottom_without_check if new_record? && self[position_column].blank?
    end
    alias_method_chain :add_to_list_bottom, :check
end