[richfaces-issues] [JBoss JIRA] Assigned: (RF-1341) Problems with Ajax requests within a a4j:repeat loop
Nick Belaevski (JIRA)
jira-events at lists.jboss.org
Tue Nov 13 13:00:36 EST 2007
[ http://jira.jboss.com/jira/browse/RF-1341?page=all ]
Nick Belaevski reassigned RF-1341:
----------------------------------
Assignee: Ilya Shaikovsky
> Problems with Ajax requests within a a4j:repeat loop
> ----------------------------------------------------
>
> Key: RF-1341
> URL: http://jira.jboss.com/jira/browse/RF-1341
> Project: RichFaces
> Issue Type: Bug
> Affects Versions: 3.1.3
> Environment: MyFaces, Richfaces 3.1.3 snapshot
> Reporter: Peter Mahoney
> Assigned To: Ilya Shaikovsky
> Fix For: 3.2.0
>
>
> I have come across two problems following a change to put some fields in an a4j:repeat loop. The backing beans have not changed. This is the code:
> <a4j:repeat id="termClauses" value="#{collectionSearchHandler.termClauses}" var="clause">
> <a4j:region id="vocabularyFilterRegion">
> <h:selectOneMenu id="vocabularyFilter" value="#{clause.vocabulary}">
> <a4j:support id="vocabularyAjaxSupport" event="onchange" reRender="termFilterPanel" ajaxSingle="true" />
> <f:selectItem itemValue="#{collectionSearchHandler.blankVocabulary}" itemLabel="#{msgs.quizFirstVocabularySelectItemDescription}" />
> <f:selectItems value="#{collectionSearchHandler.vocabularyFilterItems}" />
> </h:selectOneMenu>
> <a4j:status startText="#{msgs.quizTermSearchInProgressMessage}" />
> </a4j:region>
> <a4j:region id="termFilterRegion">
> <a4j:outputPanel id="termFilterPanel">
> <h:panelGroup rendered="#{clause.hasVocabulary}">
> <ul style="list-style-type:none; margin:0px;">
> <a4j:repeat id="termFilters" value="#{clause.termFilters}" var="termFilter" rowKeyVar="idx">
> <li>
> <h:selectOneMenu id="termFilter" value="#{termFilter.term}" converter="com.dbplc.quiz.Term" style="width:100%">
> <a4j:support id="termAjaxSupport" event="onchange" reRender="termFilterPanel,qbankSearchResultsPanel" ajaxSingle="true" actionListener="#{collectionSearchHandler.searchPerformed}" />
> <f:selectItem itemValue="#{collectionSearchHandler.blankTerm}" itemLabel="#{msgs.quizFirstTermSelectItemDescription}" />
> <f:selectItems value="#{clause.termFilterItemMap[idx]}" />
> </h:selectOneMenu>
> <h:commandButton actionListener="#{collectionSearchHandler.searchPerformed}" />
> </li>
> </a4j:repeat>
> </ul>
> </h:panelGroup>
> </a4j:outputPanel>
> <rich:messages />
> </a4j:region>
> </a4j:repeat>
> Firstly I get the following error when the form is submitted by changing the "VocabularyFilter" value:
> /questionsearch.xhtml @25,77 value="#{clause.vocabulary}": Target Unreachable, identifier 'clause' resolved to null
> If I add an onchange="this.form.submit()" to the field, to bypass the Ajax, it works fine.
> So, with the above workaround, I then get the problem that the collectionSearchHandler.searchPerformed() method (referenced by the a4j:support tag) is only called every second form submit. This worked without problems before adding the outer a4j:repeat. Using the commandButton to submit the form works every time.
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