[英]How to get id of current component in EL
I'm working with JSF and PrimeFaces, but I need to get the value of the id of a component. 我正在使用JSF和PrimeFaces,但我需要获取组件id的值。 Because I'm building dinamycally panels with diferent id, to show a the panel I need to compare if is the current panel, then show it. 因为我正在构建具有不同id的dinamycally面板,以显示我需要比较的面板,如果是当前面板,则显示它。
For example if I've the next panel 例如,如果我有下一个面板
<p:outputPanel id="#{bean.getID}" autoUpdate="true"
renderer=#{@this.id == bean.currentPanel}
>
</p:outputPanel>
And Bean 和豆
public class Bean(){
private int numberPanels =0;
private int currentPanel = 0;
public int getID(){
//...a process that return different ID
}
// getter's and setters
} }
Obviously, @this.id
doesn't work. 显然, @this.id
不起作用。 So, how to get the value of ID of componente ne JSF with PrimeFaces? 那么,如何使用PrimeFaces获取componente ne JSF的ID值?
There is an implicit #{component}
object in the EL scope that evaluates to the current UI component. EL范围中有一个隐式的#{component}
对象,它评估当前的UI组件。 Given this information, you'll get the following attribute: 根据此信息,您将获得以下属性:
rendered="#{component.id eq bean.currentPanel}"
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