Is it possible to use EL conditional operator in action attribute?

醉酒当歌 提交于 2019-11-29 01:09:19

This is not supported. The action attribute is supposed to be a MethodExpression, but the conditional operator makes it a ValueExpression syntax. I don't think this will ever be supported for MethodExpressions in EL.

You have basically 2 options:

  1. Create a single action method which delegates the job.

    <h:commandButton ... action="#{bean.method}" />
    

    with

    public String method() {
        return condition ? methodTrue() : methodFalse();
    }
    

    If necessary, pass it in as method argument by #{bean.method(condition)}.

  2. Or, conditionally render 2 buttons.

    <h:commandButton ... action="#{bean.methodTrue}" rendered="#{bean.condition}" />
    <h:commandButton ... action="#{bean.methodFalse}" rendered="#{not bean.conditon}" />
    
易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!