ruby简单增删改查的实现

<%=manage_meeting_service(@notice_types,"notice_type","通知类型管理")%>

module MeetingService

          def manage_services(me_name)
            class_name=me_name.to_s.camelize.constantize
            define_method("manage_#{me_name}s") do
               instance_variable_set("@#{me_name}s",class_name.all )
            end
            define_method("delete_#{me_name}") do
                @cate=class_name.find(params[:id]).delete
                redirect_to :action=>"manage_"+me_name.to_s+"s"
            end
            define_method("edit_#{me_name}") do
             @cate=class_name.find(params[:id])
             if me_name.to_s == "notice_type"
                render :template=>"/notices/edit_notice_type.html.erb"
             else
                render :template=>"/rcrm_meetings/edit_service.html.erb"
             end
            end
            define_method("update_#{me_name}") do
                @cate=class_name.find(params[:id])
                @cate.update_attributes(:name=>params[:name])
                redirect_to :action=>"manage_"+me_name.to_s+"s"
            end
           define_method("add_#{me_name}") do
              new_name_module class_name
                redirect_to :action=>"manage_"+me_name.to_s+"s"
            end
          end
       
      end