Add a explicit section to the conversation section of the documentation about the
components bindings in conversation scoped components
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Key: JBSEAM-858
URL:
http://jira.jboss.com/jira/browse/JBSEAM-858
Project: JBoss Seam
Issue Type: Feature Request
Components: Documentation
Affects Versions: 1.1.6.GA
Environment: Any
Reporter: Mike Quilleash
Binding UIComponents into the conversation scoped component does not work because the
bindings are executed during the restore view phase which is before the conversation
context is available.
A small section to the documentation with a (recommended?) workaround would be useful.
The workaround suggested on the Seam forums has been to use an event scoped component to
hold the bindings and then inject into the conversation component. Note that bindings
that cross event boundaries have other issues as described in the facelets FAQ (briefly)
here.
http://wiki.java.net/bin/view/Projects/FaceletsFAQ#I_m_getting_Duplicate_...
Some blurb....
Conversational scope and UIComponent bindings
Conversational components have one minor limitation which is they cannot be used to hold
bindings to JSF UIComponents. On a postback request the bindings are updated during the
Restore View phase which is before the conversation context is available.
To work around this use an event scoped component to store the component bindings and
inject it into conversation components that require it
Example
@Name( "componentBindings" )
@Scope( ScopeType.EVENT )
public class ComponentBindings
{
private HtmlPanelGrid htmlPanelGrid;
// getters and setters
}
And inject into the conversation component using
@In( required = false )
private ComponentBindings componentBindings;
Generally required should be false as on a non-postback request the component may be
invoked before the bindings are available (e.g. page actions).
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