Concerning EL in includes

[julk]

Hello everyone!

I came across another issue I'm too inexperienced to be able to resolve.

In my web page there is a main menu built on a single tabPanel and a series of toolBars. I use switchType="ajax". I basically wanted to create some kind of AJAX driven navigation. So I made tabs and links assign a backing bean property holding current subpage address and rerender the area that dynamically includes this subpage. I simplified it to an example that looks like this:

<a4j:form>
     <a4j:commandLink reRender="output" ajaxSingle="true" action="#{backingBean.gotoSomePage}">
          <h:outputTexta value="Some Page">
     </a4j:commandLink>
</a4j:form>

<a4j:outputPanel id="output">
     <ui:include src="#{backingBean.page}"/>
</a4j:outputPanel>

Now this produces a strange behaviour: the first click won't switch the included page. However the second will. Basically the inclusion mechanism doesn't see the change of the property on time.

I currently use a workaround using static src in includes and this works fine.

I guess this has something to do with the moment the action is fired. Note that putting immediate="true" doesn't change anything.

Question: Is there some way to use EL's in <ui:include> and not get this error? What's the best way of building a "main menu" kind of navigation in RichFaces?

[nbelaevski]

Hi,

Can you please try a4j:include?

[julk]

Oh, yea, forgot to mention that. I've tried already - it's indifferent.

However I've got some more clues that I've just found out about:

If i put something like this:

<a4j:outputPanel id="output">
     <h:outputText value="#{backingBean.page}"/>
     <a4j:include viewId="#{backingBean.page}"/>
</a4j:outputPanel>

than after the first click on the link I get:

/address/of/the/new/page.xhtml
"An included old page"

after the second click I get:

/address/of/the/new/page.xhtml
"An included new page"

Maybe that's of some clue.

Also if I switch backingBean scope to request the second click has the same effect as the first.

Thanks for the reply!

Oh, sorry, another thing: I currently use jboss-el-2.0.1.GA.jar. However I tried with the default ones for JSF 1.2 and encountered the identical problem.

[ilya_shaikovsky]

this

<h:form>
     <a4j:include viewId="#{profile.page}" />
     <a4j:commandButton value="to page 2" reRender="wizard" ajaxSingle="true">
     <a4j:actionparam name="topage2" value="/richfaces/include/examples/wstep2.xhtml" 
          assignTo="#{profile.page}"/>
     </a4j:commandButton>
</h:form>

Update ("wizard" - id of the panel around the form)

and

private String page="/richfaces/include/examples/wstep1.xhtml";
     
     public String getPage() {
          return page;
     }
     
     public void setPage(String page) {
          this.page = page;
     }

works for me.

seems need you full sample in war for more deep investigation.

[julk]

Oh stupid, stupid me. I finally found the bug. The problem was the option:

<context-param>
    <param-name>facelets.BUILD_BEFORE_RESTORE</param-name>
    <param-value>true</param-value>
</context-param>

which I left in place after fighting with memory usage. Actually I think this was the root of all evil - so I'll go and post this resolution in the other threads I started.

I thank you again very much for your help! I really do appreciate.