How to use ui:include with parameters?

Question

Have JSF 1.2 two pages(one.xhtml and other.xhtml),
that are included to the current page by following rule:

...
    <c:if test="#{flowScope.Bean.param1}">
        <ui:include src="one.xhtml"/>
    </c:if> 

    <c:if test="#{!flowScope.Bean.param1}">
        <ui:include src="other.xhtml"/>
    </c:if> 
...

As far one.xhtml differs from other.xhtml only by action parameters:

one.xhtml:<h:commandLink action="actionOne">
other.xhtml:<h:commandLink action="actionTwo">

Is it possible to use some general xhtml?
Instead of one.xhtml and other.xhtml,something like this:

...
    <c:if test="#{flowScope.Bean.param1}">
        <ui:include src="general.xhtml" param="actionOne"/>
    </c:if> 

    <c:if test="#{!flowScope.Bean.param1}">
        <ui:include src="general.xhtml" param="actionTwo"/>
    </c:if> 
...

thank you for help.

Marchant

Answer 1

You need to nest <ui:param> inside <ui:include> to pass parameters to the included file.

<ui:include src="general.xhtml">
    <ui:param name="action" value="actionOne" />
</ui:include>

and in the include:

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

Note that this only supports strings, not action methods. For the latter you would need to upgrade to JSF 2.0 and use composite components.

Oruro

thanks, i khow about cc, they are great, but in current jsf 1.2 project can't use them.I will try your solution and write back about results. – Marchant

It will work based on the way as you presented in the question. But if you were using #{bean.doSomething} instead of actionOne, you would really need to grab JSF 2.0 composite components. – Oruro

strange, it throws: action="#{action}": Identity 'action' was null and was unable to invoke – Marchant

As a note, param works with whole objects in addition to Strings. – Tan

@Adam: when using <ui:param>, yes. This is no secret. But this does not apply on <f:param> which will always be converted to String. Perhaps your initial confusion was based on this. – Oruro

@BalusC: I was just looking to elaborate for future reference. Thanks for the note on f:param and its comparison to ui:param. I'd never used the f library version and will keep the difference in mind. – Tan

Answer 2

In addition to BalusC's answer:

Note that this only supports strings, not action methods. For the latter you would need to upgrade to JSF 2.0 and use composite components.

There is a way to do this with JSF 1.2, though it's somewhat ugly:

<ui:include src="general.xhtml">
    <ui:param name="actionBean" value="#{myBackingBean}" />
    <ui:param name="actionMethod" value="edit" />
</ui:include>

and

<h:commandButton action="#{actionBean[actionMethod]}" />

Brigittebriley

May I know why for the actionBean value, we need to surround it with a #{} for it to work? – Detonate