<%= select_tag "clazz_id", options_for_select(@clazz, @activity.clazz_id), { 'lay-filter': 'clazz_id', class: 'required' } %>

<%= select_tag "state_id", options_for_select(EducodeSales::Activity.state_ids.keys, @activity.state_id), { 'lay-filter': 'clazz_id', class: 'required' } %>

<%= hidden_field_tag 'attachment_id', @activity.attachment&.id %> <% if @activity.attachment %> <%= link_to @activity.attachment&.filename.to_s, "/missions/upload_files/download?id=#{@activity.attachment&.id}", target: '_blank' %> 删除 <% end %> 上传文件