[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-1358) conversation stack not popping properly when used with pages.xml
[ http://jira.jboss.com/jira/browse/JBSEAM-1358?page=comments#action_12363284 ]
Hung Tang commented on JBSEAM-1358:
-----------------------------------
I suspect that the <begin-conversation nested="true"> is the culprit for
this and it's being read again when invoking the s:link so that's why there's
another new nested conversation started. When this happen, there's a duplicate entry
at the top of the stack and the redirectToParent will appear that it it didn't
redirect to anywhere.
Question is why is the page read again during an s:link?
I think it's because I didn't specify a "view" attribute so s:link may
just re-render the same view. I just tried specifying a "fake" view for the
s:link in page2.xhtml and the problem seems to be fixed, but this is a hack.
I had opened [http://jira.jboss.com/jira/browse/JBSEAM-1313] for including an additional
option to s:link to "return-to-parent".
conversation stack not popping properly when used with pages.xml
----------------------------------------------------------------
Key: JBSEAM-1358
URL: http://jira.jboss.com/jira/browse/JBSEAM-1358
Project: JBoss Seam
Issue Type: Bug
Components: Core
Affects Versions: 1.3.0.ALPHA
Reporter: Hung Tang
Assume there are two pages p1 and p2. Entering p1 will start a conversation c1. p1
contains a s:link to p2, which when clicked will start a new nested conversation c2. In
p2, there's a s:link that goes back to p1 by invoking action
#{conversation.redirectToParent}.
The strange part.
If the propagation=nested rule is specified as part of the s:link, then the
redirectToParent is working okay and the conversationStack is consistent.
If the propagation=nested rule is specified as part of p2.page.xml as
<begin-conversation nested="true"/>, then the redirectToParent does not
redirect to parent, and the conversationStack reports an additional duplicate entry for
p2.
-- Code snippets
## page1.page.xml
<page>
<description>Page 1</description>
<begin-conversation join="true"/>
</page>
## page1.xhtml
<html>
<h:form>
<ui:repeat var="entry" value="#{conversationStack}">
<h:outputText value="|"/>
<h:commandLink value="#{entry.description}"
action="#{entry.select}"/>
</ui:repeat>
</h:form>
<s:link view="/page2.xhtml" value="Page 2"/>
</html>
## page2.page.xml
<page>
<description>Page 2</description>
<begin-conversation nested="true"/>
</page>
## page2.xhtml
<html>
<h:form>
<ui:repeat var="entry" value="#{conversationStack}">
<h:outputText value="|"/>
<h:commandLink value="#{entry.description}"
action="#{entry.select}"/>
</ui:repeat>
</h:form>
<s:link value="Back to parent"
action="#{conversation.redirectToParent}"/>
</html>
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