[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-2469) add postback flag to page actions

[Demetrio Filocamo (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBSEAM-2469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12429018#action_12429018 ] 

Demetrio Filocamo commented on JBSEAM-2469:
-------------------------------------------

I saw you moved the issue to "The future", I think it is a very important issue because it's annoying (and causes a lot of problems if you don't know it) to mind that page actions are called on every ajax request...

If it is not so complex why did you move?

Demetrio Filocamo

> add postback flag to page actions
> ---------------------------------
>
>                 Key: JBSEAM-2469
>                 URL: https://jira.jboss.org/jira/browse/JBSEAM-2469
>             Project: Seam
>          Issue Type: Feature Request
>          Components: Core
>    Affects Versions: 2.0.1.CR1
>            Reporter: Dan Allen
>            Assignee: Dan Allen
>             Fix For: The future
>
>   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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