add page site close description rule

app/controllers/admins/site_pages_controller.rb

@@ -29,8 +29,12 @@ class Admins::SitePagesController <  Admins::BaseController
     end
 
     def update
-        @site_page.update(update_params)
+        if update_params[:state] == "false" && update_params[:state_description].blank?
-        flash[:success] = '保存成功'
+            flash[:danger] = '关闭站点理由不能为空'
+        else
+            @site_page.update(update_params)
+            flash[:success] = '保存成功'
+        end
         render 'edit'
     end