[jbossseam-issues] [JBoss JIRA] Created: (JBSEAM-691) Ability to turn off page parameter appending for s:link

[Christian Bauer (JIRA)]

Ability to turn off page parameter appending for s:link
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                 Key: JBSEAM-691
                 URL: http://jira.jboss.com/jira/browse/JBSEAM-691
             Project: JBoss Seam
          Issue Type: Feature Request
          Components: JSF
            Reporter: Christian Bauer
            Priority: Minor


You have basically two choices how you can transport state in a RESTful way between pages:

A. Use <s:link>, append the parameters manually, and pull the state on the target pages' backing bean with @RequestParameter

B. Use <s:link>, and let Seam automatically append the parameters that the target page requires (pages.xml parameters), set the values on the backing bean that way

Option A seems to be a good overall strategy if you rarely have to pass parameters around. Option B is the "always pass parameters around" option.

In practice, you need a mixed strategy frequently. You might go for option B because it is so convenient, but disabling the parameters when _not_ needed (because the target page treats them conditionally, for example) requires customized <s:link> declarations, like:

<s:link action="foo"><f:param name="aParamIDoNotWantToPropagate" value=""/></s:link>

Effectively, page parameters currently guarantee that every link to that page contains the specified parameters. I want to sometimes disable this guarantee, e.g. with <s:link parameters="none"/>


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