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From simon <>
Subject Re: adding parameters for actionHandler
Date Fri, 28 Sep 2007 18:16:56 GMT
On Fri, 2007-09-28 at 08:40 -0700, Gianluca Correndo wrote:
> Hello everyone,
>   I have started to develop with MyFaces and Tobago few weeks ago. I
>  have used
> tomahawk for a while and with it there was an easy way to add
>  parameters to an
> event for customising actions. For example in a page I could add a link
>  to
> erase one ontology I manage:
>  <t:commandLink styleClass="submitButton"  value="erase" id="eraseC"
> action="#{SessionBean.eraseOntology}"> 
>   <f:param name="oid" value="#{}"/>
>  </t:commandLink>
> And the event handler was able to retrieve the parameter "oid" from the
>  faces
> context with:
> public void eraseOntology(ActionEvent actionEvent){
>         String oid =
> javax.faces.context.FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("oid");
>   Now in the Tobago library this doesn't work anymore. How can I
>  achieve the
> same behaviour?

I don't know why it's not working, but there is an elegant alternative.

With JSF1.1 you can use the tomahawk t:updateActionListener tag to get
the same effect. The JSF1.2 standard has made this a part of the

For JSF1.1, see updateActionListener here:

<t:commandLink ....>

The setOntologyToErase method will be called before eraseOntology.

For JSF1.2, see f:setPropertyActionListener here:

NB: I haven't used this for a while so the syntax might not be exactly



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