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http://jira.jboss.com/jira/browse/JBSEAM-2469?page=comments#action_12403018 ]
Pete Muir commented on JBSEAM-2469:
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I think adding a condition to action is a good idea.
add postback flag to page actions
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Key: JBSEAM-2469
URL:
http://jira.jboss.com/jira/browse/JBSEAM-2469
Project: JBoss Seam
Issue Type: Feature Request
Components: Core
Affects Versions: 2.0.1.CR1
Reporter: Dan Allen
Assigned To: Dan Allen
Fix For: 2.1.0.GA
Original Estimate: 1 hour
Remaining Estimate: 1 hour
Page actions are incredibly useful, but sometimes they can get in the way during a
postback. I would like to see a postback attribute added to the <action> tag that
can be used to disable the action on postback. It's possible using a conditional, but
it is ugly and a lot of typing.
Here is the logic that would go into Pages.java
private boolean isPostBack(FacesContext facesContext)
{
return facesContext.getExternalContext().getRequestParameterMap().
containsKey(ResponseStateManager.VIEW_STATE_PARAM);
}
The conditional alternative would be:
<action execute="#{component.action}" if="#{empty
param['javax.faces.ViewState']}"/>
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