Question

这个问题必须是一个大难问题,但我似乎无法找到正确的关键词来讨论:我有一个行动倾听者,可以从一个数据表中同一分界线所产生的多个核对箱中的任何一个收听一次事件。我怎么能从发表这次活动的听众那里听说?

In particular, I need the index of the component so I can map it to an ordered list in the model. I know I can get the UIComponent object, and from there I can get the client ID of the component. And knowing that the client ID has the component s index embedded in it, yes I could do the sleazy thing, and parse the index from the client ID. But I know that would be a horrible, fragile and unmaintainable hack.

What s the right way to do this?

Answer 1

利用数据表<代码>var属性,你应当能够这样做。

<h:dataTable ...  var="currentRow">
  ....
  <h:selectBooleanCheckbox ... actionListener="#{blah.doThis}">
      <f:attribute name="curRec" value="#{currentRow}" />
  </h:selectBooleanCheckbox>

bean:

public void doThis(ActionEvent ae)
{
    TreeMap myMap = (TreeMap)ae.getComponent().getAttributes().get("curRec");
    ...
}

Edit: The binding variable of your datatable should have the method getRowIndex();. That should give you the index of the record that caused the event in the table. I m referencing an ICEfaces project, so I apologize if that isn t correct. Let me know, thx.

Answer 2

在初步搜查之后,我认为这可以帮助你。

rel=“nofollow” http://illegalargument extraion.blogspot.com/2009/02/jsf-working-with-component-ids.html

您是否尝试使用f:除了检查箱的数值外,还采用习惯参数,这样比使用国际发展法来操纵商业逻辑更加清洁。 ID.

友情链接