Calling class method on form entry

[pete007]

Hi, I think it is a very simple question, but I not for me. :)

I have split a working form in two parts and something is missing now.

Here is the working original:

the selectandshow.xhtml

<h:form id="routerForm">
  Start: <h:outputText escape="false" value="${router.startNodesSelectBox}"/>
  End: <h:outputText escape="false" value="${router.endNodesSelectBox}"/>
  <h:commandButton id="findroute" value="find a route" action="#{router.findroute}"/>

  <h:graphicImage value="../images/#{router.startImage}"/>
  <h:graphicImage value="../images/#{router.endImage}"/>
</h:form>

And that is, what I made out of it:

the selectform.xhtml:

<h:form id="routerForm">
  Start: <h:outputText escape="false" value="${router.startNodesSimple}"/>
  End: <h:outputText escape="false" value="${router.endNodesSimple}"/>
  <h:commandButton id="findroute" value="find a route" action="/showonlyform.xhtml"/>
</h:form>

the showonlyform.xhtml:

  Start: #{router.start}
  <h:graphicImage value="../images/#{router.startImage}"/>
  End: #{router.end}
  <h:graphicImage value="../images/#{router.endImage}"/>

I had to replace the action parameter to point to the second form and now nobody is calling the router.findRoute()-method. So I only see the two parameters start and end from the selectboxes, but the images are empty because they were not calculated.

I would like to call the method before rendering of the second form. Where and how would I do this best?

Thanks in advance, Peter

[pete007]

Maybe that was too long .. or too simple? .. here's a shorter try:

I got this in my form:

Start: #{router.start}
<h:graphicImage value="../images/#{router.startImage}"/>

The content of the variable startImage is calculated by a method router.findRoute();

Assuming, I call it by a GET request like this:

http://localhost:8080/gdc/showonlyform.xhtml?start=Terminal1

I only see the String Start: Terminal1, but there is no image.

I tried to place a page action in pages.xml to call the method:

<page view-id="showonlyform*" action="#{router.findRoute}">
   <param name="start" value="#{router.start}"/>
 </page>

But there is still no image. The method isn't called. Nothing in the logs.

Any ideas, where to look next?

[kariem]

For your second example: is it possible that you are missing the / in front of the view-id? Shouldn't it be

<page view-id="/showonlyform*" …

Just guessing, because all my rules are setup this way. For the page configuration I prefer using <view-id>.page.xml. Shouldn't an error be raised, just the way you receive an error in <s:link/> if the view-id does not start with a slash?

Did you try calling the action directly, and just returning the view id from the action? Or instead, returning an identifier which is used in navigation rules?

[pete007]

You're right, I only forgot the slash, will check this later, when I'm at home, thanks a lot.

I didn't get any error messages, but I think, that you cannot force a slash at the beginning because the term is a regexp and could be like "*Edit*" or some weird stuff, which is valid too. What would a view-id without slash reference to? If there is nothing, that can be accessed this way, it can be deleted.