问题描述
我们的Web应用程序的模块在中间显示一个数据表，在右侧显示所选记录的详细信息.每次用户选择母版表的记录时，我们都会更新详细信息页面并显示所选记录的详细信息.现在我们有以下问题:
The modules of our web application shows a datatable in the center and the detail of the selected record on the right. Every time the user selects a record of the mastertable we update the detail page and show the details of the selected record. Now we have the following problem:
- 用户在主表中选择一条记录，并在详细信息区域中显示数据.
- 用户修改明细数据并单击保存.
- 发生验证(bean验证)错误，用户将看到错误消息(msg).
- 用户选择更正主表的另一条记录，而不是纠正错误的输入.
- 所有没有错误状态的字段都将使用新记录的数据进行更新.之前错误的字段显示旧数据.旧记录的数据会一直保留，直到用户刷新页面为止.
有什么办法可以解决这个问题?我已经从Primefaces扩展中看到了pe:resetInput组件，但是该组件需要一个UICommand组件才能工作.如果用户选择主表的另一个条目，我需要一个可行的解决方案.
Is there any way to solve this problem? I've seen a pe:resetInput component from Primefaces extensions but this component needs a UICommand component to work. I need a solution that works if the user selects another entry of the mastertable.
推荐答案
您可以使用 OmniFaces 的ResetInputAjaxActionListener为了这.除了被注册为<f:actionListener>之外，还可以将其全局注册为PhaseListener.
You can use the ResetInputAjaxActionListener of OmniFaces for this. Apart from being registered as a <f:actionListener>, it can also be globally registered as a PhaseListener.
ResetInputAjaxActionListenershowcase exampleResetInputAjaxActionListenerAPI documentationResetInputAjaxActionListenersource code
如果您打算自己掌握它，那么基本上您需要自己编写代码，基本上可以完成以下任务:
If you intend to take it in your own hands, then you basically need to write code yourself which does basically the following things:
- 在调用动作阶段，获取未由ajax请求执行/处理的待渲染
UIInput组件. - 在其上调用
resetValue()方法.
- During the invoke action phase, get to-be-rendered
UIInputcomponents which are not been executed/processed by the ajax request. - Invoke
resetValue()method on them.
这篇关于失败后的JSF2 BeanValidation重置值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！