[jboss-user] [JBoss Seam] - Page parameter propagation not working?

[SunFire]

Hi there,

I have a page with a Gallery.page.xml looking like this:

<?xml version="1.0" encoding="UTF-8"?>
  | <page xmlns="http://jboss.com/products/seam/pages"
  |       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  |       xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.0.xsd"
  |       login-required="true">
  | 
  |    <param name="tankId" value="#{tankHome.tankId}" required="true"/>
  | 
  | </page>
  | 
This works great when you link to the page with things like <s:link view="/Gallery.xhtml" value="Gallery"/>. Basically tankId is populated when you use GET parameters.
Within the Gallery.xhtml page I have a form that allows for picture uploading. When I hit the upload button I get
javax.faces.validator.ValidatorException: value is requiredIf I remove the required="true" attribute from the param it works like a charm. Only thing is I have no way of enforcing that a valid id is being provided. I thought that this stuff gets automatically populated if I stay withinn the same page and the page parameter is set? It work for links but not for JSF form submissions.
I also tried this
<?xml version="1.0" encoding="UTF-8"?>
  | <page xmlns="http://jboss.com/products/seam/pages"
  |       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  |       xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.0.xsd"
  |       login-required="true">
  | 
  |    <param name="tankId" value="#{tankHome.tankId}" />
  |    <restrict>#{tankHome.tankId != null}</restrict>
  | 
  | </page>
but with this I get org.jboss.seam.security.AuthorizationException: Authorization check failed for expression [#{tankHome.tankId != null}]
when I submit the upload form. Again the entire upload thing works fine as long as I don't try to validate/restrict the tankId/tankHome in page.xml.

I wonder if I got some concepts of auto parameter propagation wrong or if this is a bug?

Thanks, Thorsten

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