update

app/controllers/admin/programs_controller.rb

@@ -0,0 +1,32 @@
+module Admin
+  class ProgramsController < Admin::BaseController
+    load_and_authorize_resource :conference, find_by: :short_title
+    load_and_authorize_resource through: :conference, singleton: true
+
+    def show; end
+
+    def edit; end
+
+    def update
+      authorize! :update, @conference.program
+      @program = @conference.program
+      @program.assign_attributes(program_params)
+#       send_mail_on_schedule_public = @program.notify_on_schedule_public?
+
+      if @program.update_attributes(program_params)
+#         Mailbot.delay.send_on_schedule_public(@conference) if send_mail_on_schedule_public
+        redirect_to(admin_conference_program_path(@conference.short_title),
+                    notice: 'The program was successfully updated.')
+      else
+        flash[:error] = "Updating program failed. #{@program.errors.to_a.join('. ')}."
+        render :new
+      end
+    end
+
+    private
+
+    def program_params
+      params.require(:program).permit(:rating, :schedule_public, :schedule_fluid)
+    end
+  end
+end