page params and h:commandButton

[ericjava.eric.chiralsoftware.net]

Looking at the docs, it says:

The <param> declaration is bidirectional, just like a value binding for a JSF input:  .... The value is transparently propagated with any JSF form submission for the page with the given view id. This means that view parameters behave like PAGE-scoped context variables for faces requests.

But it doesn't seem to be working this way.  When I have a h:form on my page, and the page has some page params are defined, and I use a h:commandButton, the page params go away after I submit the form.

I know I can manually put them in there with input type="hidden" .... if I want to, but shouldn't they show up automatically?

And I do need to submit the form, so an s:button wouldn't work.

Alternatively I could do this all with conversations and not even use page params but I'm curious about this and would like to have both options.

[ericjava.eric.chiralsoftware.net]

Ah, I found this: http://seamframework.org/Community/AreParametersSupposedToPropagateWithHcommandButton

Peter Muir:

It's automatically added to <s:link/> or <s:button/>, you have to add it to h:commandLink using <f:param /> and you can't with <h:commandButton/> (as it doesn't accept <f:param/>s.

The transparent propagation refers to the fact that when you submit the form it will be propagated in the page context (not on the URL). Take a look at how I implemented <s:conversationPropagation /> for command buttons if you really need to do this (it's not pleasant).

So, no luck in using page params with commandButton.  I'll use a conversation or do something else.