adapter.rb

   def load(id)
         options_for_find
         @clazz.first(
           :conditions => { @clazz.primary_key => id.to_i}
         )
       end

       def load_all(ids)
         options_for_find
         @clazz.all(
           :conditions => { @clazz.primary_key => ids.map { |id|id.to_i }}
         )
       end

       private

       def options_for_find
         options[:include] = @include unless @include.blank?
         options[:select]  =  @select unless  @select.blank?
       end