Constructing s:link or s:button action dynamically

[brombie.wanch.akewan.com]

Hi everyone,

Is there a way to construct the action inside an s:button or s:link dynamically?

For example, I want to do something like the code below to create a new Fruit based on a Seed.  The code doesn't work since seedHome.instance.id is not getting evaluated and have its value rendered.

<s:button   
    action="#{fruitHome.createNew(seedHome.instance.id)}"
    id="createFruit" 
    view="/Fruit.xhtml"
    value="Create New Fruit Based">          
</s:button> 

Is there a way to construct the action for a link/button either during render time, or through a javascript on the browser side?

thanks!

[keithnaas]

See FaceletsParamForActionMethod for the same question yesterday.

[keithnaas]

That was the wrong topic, I'm trying to find the right one....but
in the meantime.

The action string

#{fruitHome.createNew(seedHome.instance.id)}

is not evaluated and rendered in the page as a string of the form fruitHome.createNew(10).  Instead the raw action expression is checked against raw action expressions defined in navigation rules.  So if you have a navigation rule that says

<navigation from-action="#{fruitHome.createNew(seedHome.instance.id)}"/>

then that navigation rule will be executed. 

[brombie.wanch.akewan.com]

Thanks for the pointer.  I found some JIRA tickets dated back in 2006 about seam supporting passing object as parameters on action but looks like it's dropped now.  I've changed the s:link approach and opted for the more traditional approach through conditional action in the page.xml.

[keithnaas]

It is still possible to pass objects as parameters to actions.  The issue is that the navigation rule has to 100% match the same string action expression in the views.

There is an FAQ entry as well.