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.

score 67 · Accepted Answer · answered Mar 13 '11 at 17:47

67

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.

answered Mar 13 '11 at 17:47

BalusC

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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. – sergionni Mar 13 '11 at 17:53
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. – BalusC Mar 13 '11 at 18:04
strange, it throws: action="#{action}": Identity 'action' was null and was unable to invoke – sergionni Mar 13 '11 at 18:06
2

As a note, param works with whole objects in addition to Strings. – Adam Aug 08 '11 at 22:37
2

@Adam: when using ``, yes. This is no secret. But this does not apply on `` which will always be converted to `String`. Perhaps your initial confusion was based on this. – BalusC Aug 08 '11 at 22:39
2

@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. – Adam Aug 10 '11 at 17:40

score 22 · Answer 2 · answered Mar 13 '11 at 19:05

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]}" />

May I know why for the actionBean value, we need to surround it with a #{} for it to work? — Nik Mohamad Lokman, Dec 23 '19 at 08:08

How to use ui:include with parameters?

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