[richfaces-issues] [JBoss JIRA] Created: (RF-4102) Columns: use restriction

[Svetlana mukhina (JIRA)]

Columns: use restriction
------------------------

                 Key: RF-4102
                 URL: https://jira.jboss.org/jira/browse/RF-4102
             Project: RichFaces
          Issue Type: Task
          Components: doc
    Affects Versions: 3.2.1
            Reporter: Svetlana mukhina
            Assignee: Alex Tserbo
             Fix For: 3.2.2


Here the link to forum topic: http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4168492#4168492

The columns component architecture does not allow using of request scoped page attributes in expressions for columns attributes.

Because iteration tags vars is initializing on rendering phase. So we try to get data from the vars in columns JSP tag before vars have been initialized.

Example:
            <rich:dataTable value="#{bean.data}" var="var">

            <rich:columns value="#{var.columns}" ...>
This code will be a case of JSP tag exception.

 We need to change developer guide to avoid the error.



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