如何将动作字符串传递到JSF 2复合组件中? [英] How to pass a action string into a JSF 2 composite component?

问题描述

我正在JSF 2中创建一个简单的菜单复合组件.但是，我无法将String属性传递给复合组件以用于< h:commandLink>的action属性.我的组件看起来像:

I'm creating a simple menuing composite component in JSF 2. However, I am unable to pass a String attribute into the composite component to use in the action attribute of the <h:commandLink>. My component looks like:

<composite:interface>
    <composite:attribute name="title" required="true" type="java.lang.String"/>
    <composite:attribute name="view" required="true" />
</composite:interface>

<!--implementation-->
<composite:implementation>
    <li><h:commandLink action="#{cc.attrs.view}" value="#{cc.attrs.title}" /></li>
</composite:implementation>

如何将动作字符串放入< h:commandLink>的action属性中?

How can I get an action String into the action attribute of the <h:commandLink>?

推荐答案

像这样的东西吸引了Horstmanns :-)

Looks like this attracts the Horstmanns :-)

您必须将属性命名为"action"，然后使用重定位.然后，一些特殊的处理方法会以清晰的说明(不是)在

You must name the attribute "action" and use retargeting. Then some special handling kicks in that is described with exquisite clarity (not) at

http://docs. oracle.com/javaee/6/javaserverfaces/2.0/docs/pdldocs/facelets/composite/attribute.html

以及我不允许粘贴其链接的ViewDeclarationLanguage.retargetMethodExpressions(不是ViewHandler)的API文档.

and the API doc of ViewDeclarationLanguage.retargetMethodExpressions (not ViewHandler) whose link I am not allowed to paste in.

这是您的操作方式.

<composite:interface>
    <composite:attribute name="title" required="true" type="java.lang.String"/>
    <composite:attribute name="action" targets="view" required="true" />
</composite:interface>

<!--implementation-->
<composite:implementation>
    <li><h:commandLink id="view" value="#{cc.attrs.title}" /></li>
</composite:implementation>

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